diff --git a/src/airport_gui.cpp b/src/airport_gui.cpp
index 0de11c9545..5efbb98a30 100644
--- a/src/airport_gui.cpp
+++ b/src/airport_gui.cpp
@@ -58,20 +58,16 @@ void CcBuildAirport(Commands cmd, const CommandCost &result, TileIndex tile, con
 static void PlaceAirport(TileIndex tile)
 {
 	if (_selected_airport_index == -1) return;
-	uint32 p2 = _ctrl_pressed;
-	SB(p2, 16, 16, INVALID_STATION); // no station to join
 
-	uint32 p1 = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index)->GetIndex();
-	p1 |= _selected_airport_layout << 8;
+	byte airport_type = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index)->GetIndex();
+	byte layout = _selected_airport_layout;
+	bool adjacent = _ctrl_pressed;
 
 	auto proc = [=](bool test, StationID to_join) -> bool {
 		if (test) {
-			return Command<CMD_BUILD_AIRPORT>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_AIRPORT>()), tile, p1, p2, {}).Succeeded();
+			return Command<CMD_BUILD_AIRPORT>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_AIRPORT>()), tile, airport_type, layout, INVALID_STATION, adjacent).Succeeded();
 		} else {
-			uint32 p2_final = p2;
-			if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-			return Command<CMD_BUILD_AIRPORT>::Post(STR_ERROR_CAN_T_BUILD_AIRPORT_HERE, CcBuildAirport, tile, p1, p2_final, {});
+			return Command<CMD_BUILD_AIRPORT>::Post(STR_ERROR_CAN_T_BUILD_AIRPORT_HERE, CcBuildAirport, tile, airport_type, layout, to_join, adjacent);
 		}
 	};
 
diff --git a/src/cmd_helper.h b/src/cmd_helper.h
index ceb4d4bd9b..03b6e8ea77 100644
--- a/src/cmd_helper.h
+++ b/src/cmd_helper.h
@@ -31,4 +31,15 @@ template<typename T, uint S, uint N, typename U> static inline T Extract(U v)
 	return IsInsideMM(masked, EnumPropsT<T>::begin, EnumPropsT<T>::end) ? (T)masked : EnumPropsT<T>::invalid;
 }
 
+/**
+ * Check if an enum value is inside it's valid values.
+ * @tparam T Type of enum.
+ * @param v The value to validate
+ * @return True if enum is valid.
+ */
+template <typename T> static constexpr inline bool IsEnumValid(T v) noexcept
+{
+	return IsInsideMM(v, EnumPropsT<T>::begin, EnumPropsT<T>::end);
+}
+
 #endif /* CMD_HELPER_H */
diff --git a/src/core/math_func.hpp b/src/core/math_func.hpp
index 222b4120e3..8f9b5626c9 100644
--- a/src/core/math_func.hpp
+++ b/src/core/math_func.hpp
@@ -201,7 +201,7 @@ static inline bool IsInsideBS(const T x, const size_t base, const size_t size)
  * @see IsInsideBS()
  */
 template <typename T>
-static inline bool IsInsideMM(const T x, const size_t min, const size_t max)
+static constexpr inline bool IsInsideMM(const T x, const size_t min, const size_t max) noexcept
 {
 	return (size_t)(x - min) < (max - min);
 }
diff --git a/src/depot_cmd.cpp b/src/depot_cmd.cpp
index 1ffaeb70b2..294de69e32 100644
--- a/src/depot_cmd.cpp
+++ b/src/depot_cmd.cpp
@@ -39,15 +39,13 @@ static bool IsUniqueDepotName(const std::string &name)
 /**
  * Rename a depot.
  * @param flags type of operation
- * @param tile unused
- * @param p1 id of depot
- * @param p2 unused
+ * @param depot_id id of depot
  * @param text the new name or an empty string when resetting to the default
  * @return the cost of this operation or an error
  */
-CommandCost CmdRenameDepot(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRenameDepot(DoCommandFlag flags, DepotID depot_id, const std::string &text)
 {
-	Depot *d = Depot::GetIfValid(p1);
+	Depot *d = Depot::GetIfValid(depot_id);
 	if (d == nullptr) return CMD_ERROR;
 
 	CommandCost ret = CheckTileOwnership(d->xy);
diff --git a/src/depot_cmd.h b/src/depot_cmd.h
index cc9701fb7f..d476aecaf9 100644
--- a/src/depot_cmd.h
+++ b/src/depot_cmd.h
@@ -11,8 +11,9 @@
 #define DEPOT_CMD_H
 
 #include "command_type.h"
+#include "depot_type.h"
 
-CommandProc CmdRenameDepot;
+CommandCost CmdRenameDepot(DoCommandFlag flags, DepotID depot_id, const std::string &text);
 
 DEF_CMD_TRAIT(CMD_RENAME_DEPOT, CmdRenameDepot, 0, CMDT_OTHER_MANAGEMENT)
 
diff --git a/src/depot_gui.cpp b/src/depot_gui.cpp
index 1b5929de7e..7fd2e03471 100644
--- a/src/depot_gui.cpp
+++ b/src/depot_gui.cpp
@@ -837,7 +837,7 @@ struct DepotWindow : Window {
 		if (str == nullptr) return;
 
 		/* Do depot renaming */
-		Command<CMD_RENAME_DEPOT>::Post(STR_ERROR_CAN_T_RENAME_DEPOT, 0, this->GetDepotIndex(), 0, str);
+		Command<CMD_RENAME_DEPOT>::Post(STR_ERROR_CAN_T_RENAME_DEPOT, this->GetDepotIndex(), str);
 	}
 
 	bool OnRightClick(Point pt, int widget) override
diff --git a/src/dock_gui.cpp b/src/dock_gui.cpp
index 328ce1c20c..cdcb4ea84a 100644
--- a/src/dock_gui.cpp
+++ b/src/dock_gui.cpp
@@ -204,7 +204,7 @@ struct BuildDocksToolbarWindow : Window {
 				break;
 
 			case WID_DT_DEPOT: // Build depot button
-				Command<CMD_BUILD_SHIP_DEPOT>::Post(STR_ERROR_CAN_T_BUILD_SHIP_DEPOT, CcBuildDocks, tile, _ship_depot_direction, 0, {});
+				Command<CMD_BUILD_SHIP_DEPOT>::Post(STR_ERROR_CAN_T_BUILD_SHIP_DEPOT, CcBuildDocks, tile, _ship_depot_direction);
 				break;
 
 			case WID_DT_STATION: { // Build station button
@@ -212,17 +212,12 @@ struct BuildDocksToolbarWindow : Window {
 				DiagDirection dir = GetInclinedSlopeDirection(GetTileSlope(tile));
 				TileIndex tile_to = (dir != INVALID_DIAGDIR ? TileAddByDiagDir(tile, ReverseDiagDir(dir)) : tile);
 
-				uint32 p1 = _ctrl_pressed;
-				uint32 p2 = (uint32)INVALID_STATION << 16; // no station to join
-
+				bool adjacent = _ctrl_pressed;
 				auto proc = [=](bool test, StationID to_join) -> bool {
 					if (test) {
-						return Command<CMD_BUILD_DOCK>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_DOCK>()), tile, p1, p2, {}).Succeeded();
+						return Command<CMD_BUILD_DOCK>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_DOCK>()), tile, INVALID_STATION, adjacent).Succeeded();
 					} else {
-						uint32 p2_final = p2;
-						if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-						return Command<CMD_BUILD_DOCK>::Post(STR_ERROR_CAN_T_BUILD_DOCK_HERE, CcBuildDocks, tile, p1, p2_final, {});
+						return Command<CMD_BUILD_DOCK>::Post(STR_ERROR_CAN_T_BUILD_DOCK_HERE, CcBuildDocks, tile, to_join, adjacent);
 					}
 				};
 
@@ -231,7 +226,7 @@ struct BuildDocksToolbarWindow : Window {
 			}
 
 			case WID_DT_BUOY: // Build buoy button
-				Command<CMD_BUILD_BUOY>::Post(STR_ERROR_CAN_T_POSITION_BUOY_HERE, CcBuildDocks, tile, 0, 0, {});
+				Command<CMD_BUILD_BUOY>::Post(STR_ERROR_CAN_T_POSITION_BUOY_HERE, CcBuildDocks, tile);
 				break;
 
 			case WID_DT_RIVER: // Build river button (in scenario editor)
diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
index 066fb78200..389c44dd98 100644
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -976,24 +976,21 @@ CommandCost CmdRemoveRailroadTrack(DoCommandFlag flags, TileIndex tile, uint32 p
  * Build a train depot
  * @param flags operation to perform
  * @param tile position of the train depot
- * @param p1 rail type
- * @param p2 bit 0..1 entrance direction (DiagDirection)
+ * @param railtype rail type
+ * @param dir entrance direction
  * @param text unused
  * @return the cost of this operation or an error
  *
  * @todo When checking for the tile slope,
  * distinguish between "Flat land required" and "land sloped in wrong direction"
  */
-CommandCost CmdBuildTrainDepot(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildTrainDepot(DoCommandFlag flags, TileIndex tile, RailType railtype, DiagDirection dir)
 {
 	/* check railtype and valid direction for depot (0 through 3), 4 in total */
-	RailType railtype = Extract<RailType, 0, 6>(p1);
-	if (!ValParamRailtype(railtype)) return CMD_ERROR;
+	if (!ValParamRailtype(railtype) || !IsEnumValid(dir)) return CMD_ERROR;
 
 	Slope tileh = GetTileSlope(tile);
 
-	DiagDirection dir = Extract<DiagDirection, 0, 2>(p2);
-
 	CommandCost cost(EXPENSES_CONSTRUCTION);
 
 	/* Prohibit construction if
diff --git a/src/rail_cmd.h b/src/rail_cmd.h
index 1fb0fdee0d..31266e2b03 100644
--- a/src/rail_cmd.h
+++ b/src/rail_cmd.h
@@ -16,7 +16,7 @@ CommandProc CmdBuildRailroadTrack;
 CommandProc CmdRemoveRailroadTrack;
 CommandProc CmdBuildSingleRail;
 CommandProc CmdRemoveSingleRail;
-CommandProc CmdBuildTrainDepot;
+CommandCost CmdBuildTrainDepot(DoCommandFlag flags, TileIndex tile, RailType railtype, DiagDirection dir);
 CommandProc CmdBuildSingleSignal;
 CommandProc CmdRemoveSingleSignal;
 CommandProc CmdConvertRail;
diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
index c1c45d5d72..60ac12c726 100644
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -139,8 +139,7 @@ void CcRailDepot(Commands cmd, const CommandCost &result, TileIndex tile, const
 {
 	if (result.Failed()) return;
 
-	auto [tile_, p1, p2, text] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_TRAIN_DEPOT>::Args>(data);
-	DiagDirection dir = (DiagDirection)p2;
+	auto [tile_, rt, dir] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_TRAIN_DEPOT>::Args>(data);
 
 	if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_CONSTRUCTION_RAIL, tile);
 	if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
@@ -173,7 +172,7 @@ static void PlaceRail_Waypoint(TileIndex tile)
 	} else {
 		/* Tile where we can't build rail waypoints. This is always going to fail,
 		 * but provides the user with a proper error message. */
-		Command<CMD_BUILD_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT, tile, 1 << 8 | 1 << 16, STAT_CLASS_WAYP | INVALID_STATION << 16, {});
+		Command<CMD_BUILD_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT, tile, AXIS_X, 1, 1, STAT_CLASS_WAYP, 0, INVALID_STATION, false);
 	}
 }
 
@@ -199,21 +198,21 @@ static void PlaceRail_Station(TileIndex tile)
 		VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED, DDSP_BUILD_STATION);
 		VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 	} else {
-		uint32 p1 = _cur_railtype | _railstation.orientation << 6 | _settings_client.gui.station_numtracks << 8 | _settings_client.gui.station_platlength << 16 | _ctrl_pressed << 24;
-		uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
-
 		int w = _settings_client.gui.station_numtracks;
 		int h = _settings_client.gui.station_platlength;
 		if (!_railstation.orientation) Swap(w, h);
 
+		RailStationGUISettings params = _railstation;
+		RailType rt = _cur_railtype;
+		byte numtracks = _settings_client.gui.station_numtracks;
+		byte platlength = _settings_client.gui.station_platlength;
+		bool adjacent = _ctrl_pressed;
+
 		auto proc = [=](bool test, StationID to_join) -> bool {
 			if (test) {
-				return Command<CMD_BUILD_RAIL_STATION>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_STATION>()), tile, p1, p2, {}).Succeeded();
+				return Command<CMD_BUILD_RAIL_STATION>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_STATION>()), tile, rt, params.orientation, numtracks, platlength, params.station_class, params.station_type, INVALID_STATION, adjacent).Succeeded();
 			} else {
-				uint32 p2_final = p2;
-				if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-				return Command<CMD_BUILD_RAIL_STATION>::Post(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION, CcStation, tile, p1, p2_final, {});
+				return Command<CMD_BUILD_RAIL_STATION>::Post(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION, CcStation, tile, rt, params.orientation, numtracks, platlength, params.station_class, params.station_type, to_join, adjacent);
 			}
 		};
 
@@ -664,7 +663,7 @@ struct BuildRailToolbarWindow : Window {
 				break;
 
 			case WID_RAT_BUILD_DEPOT:
-				Command<CMD_BUILD_TRAIN_DEPOT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_DEPOT, CcRailDepot, tile, _cur_railtype, _build_depot_direction, {});
+				Command<CMD_BUILD_TRAIN_DEPOT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_DEPOT, CcRailDepot, tile, _cur_railtype, _build_depot_direction);
 				break;
 
 			case WID_RAT_BUILD_WAYPOINT:
@@ -734,27 +733,25 @@ struct BuildRailToolbarWindow : Window {
 					if (this->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 						/* Station */
 						if (_remove_button_clicked) {
-							Command<CMD_REMOVE_FROM_RAIL_STATION>::Post(STR_ERROR_CAN_T_REMOVE_PART_OF_STATION, CcPlaySound_CONSTRUCTION_RAIL, end_tile, start_tile, _ctrl_pressed ? 0 : 1, {});
+							Command<CMD_REMOVE_FROM_RAIL_STATION>::Post(STR_ERROR_CAN_T_REMOVE_PART_OF_STATION, CcPlaySound_CONSTRUCTION_RAIL, end_tile, start_tile, _ctrl_pressed);
 						} else {
 							HandleStationPlacement(start_tile, end_tile);
 						}
 					} else {
 						/* Waypoint */
 						if (_remove_button_clicked) {
-							Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_REMOVE_TRAIN_WAYPOINT, CcPlaySound_CONSTRUCTION_RAIL, end_tile, start_tile, _ctrl_pressed ? 0 : 1, {});
+							Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_REMOVE_TRAIN_WAYPOINT, CcPlaySound_CONSTRUCTION_RAIL, end_tile, start_tile, _ctrl_pressed);
 						} else {
 							TileArea ta(start_tile, end_tile);
-							uint32 p1 = _cur_railtype | (select_method == VPM_X_LIMITED ? AXIS_X : AXIS_Y) << 6 | ta.w << 8 | ta.h << 16 | _ctrl_pressed << 24;
-							uint32 p2 = STAT_CLASS_WAYP | _cur_waypoint_type << 8 | INVALID_STATION << 16;
+							Axis axis = select_method == VPM_X_LIMITED ? AXIS_X : AXIS_Y;
+							bool adjacent = _ctrl_pressed;
+							byte waypoint_type = _cur_waypoint_type;
 
 							auto proc = [=](bool test, StationID to_join) -> bool {
 								if (test) {
-									return Command<CMD_BUILD_RAIL_WAYPOINT>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_WAYPOINT>()), ta.tile, p1, p2, {}).Succeeded();
+									return Command<CMD_BUILD_RAIL_WAYPOINT>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_WAYPOINT>()), ta.tile, axis, ta.w, ta.h, STAT_CLASS_WAYP, waypoint_type, INVALID_STATION, adjacent).Succeeded();
 								} else {
-									uint32 p2_final = p2;
-									if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-									return Command<CMD_BUILD_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT, CcPlaySound_CONSTRUCTION_RAIL, ta.tile, p1, p2_final, {});
+									return Command<CMD_BUILD_RAIL_WAYPOINT>::Post(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT, CcPlaySound_CONSTRUCTION_RAIL, ta.tile, axis, ta.w, ta.h, STAT_CLASS_WAYP, waypoint_type, to_join, adjacent);
 								}
 							};
 
@@ -913,17 +910,15 @@ static void HandleStationPlacement(TileIndex start, TileIndex end)
 
 	if (_railstation.orientation == AXIS_X) Swap(numtracks, platlength);
 
-	uint32 p1 = _cur_railtype | _railstation.orientation << 6 | numtracks << 8 | platlength << 16 | _ctrl_pressed << 24;
-	uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
+	RailStationGUISettings params = _railstation;
+	RailType rt = _cur_railtype;
+	bool adjacent = _ctrl_pressed;
 
 	auto proc = [=](bool test, StationID to_join) -> bool {
 		if (test) {
-			return Command<CMD_BUILD_RAIL_STATION>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_STATION>()), ta.tile, p1, p2, {}).Succeeded();
+			return Command<CMD_BUILD_RAIL_STATION>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_RAIL_STATION>()), ta.tile, rt, params.orientation, numtracks, platlength, params.station_class, params.station_type, INVALID_STATION, adjacent).Succeeded();
 		} else {
-			uint32 p2_final = p2;
-			if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-			return Command<CMD_BUILD_RAIL_STATION>::Post(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION, CcStation, ta.tile, p1, p2_final, {});
+			return Command<CMD_BUILD_RAIL_STATION>::Post(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION, CcStation, ta.tile, rt, params.orientation, numtracks, platlength, params.station_class, params.station_type, to_join, adjacent);
 		}
 	};
 
diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp
index 637b476d0d..72dcb5276e 100644
--- a/src/road_cmd.cpp
+++ b/src/road_cmd.cpp
@@ -1157,21 +1157,16 @@ CommandCost CmdRemoveLongRoad(DoCommandFlag flags, TileIndex start_tile, uint32
  * Build a road depot.
  * @param tile tile where to build the depot
  * @param flags operation to perform
- * @param p1 bit 0..1 entrance direction (DiagDirection)
- *           bit 2..7 road type
- * @param p2 unused
- * @param text unused
+ * @param rt road type
+ * @param dir entrance direction
  * @return the cost of this operation or an error
  *
  * @todo When checking for the tile slope,
  * distinguish between "Flat land required" and "land sloped in wrong direction"
  */
-CommandCost CmdBuildRoadDepot(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildRoadDepot(DoCommandFlag flags, TileIndex tile, RoadType rt, DiagDirection dir)
 {
-	DiagDirection dir = Extract<DiagDirection, 0, 2>(p1);
-
-	RoadType rt = Extract<RoadType, 2, 6>(p1);
-	if (!ValParamRoadType(rt)) return CMD_ERROR;
+	if (!ValParamRoadType(rt) || !IsEnumValid(dir)) return CMD_ERROR;
 
 	CommandCost cost(EXPENSES_CONSTRUCTION);
 
diff --git a/src/road_cmd.h b/src/road_cmd.h
index 05f064b0bc..0cab1252f0 100644
--- a/src/road_cmd.h
+++ b/src/road_cmd.h
@@ -20,7 +20,7 @@ void UpdateNearestTownForRoadTiles(bool invalidate);
 CommandProc CmdBuildLongRoad;
 CommandProc CmdRemoveLongRoad;
 CommandProc CmdBuildRoad;
-CommandProc CmdBuildRoadDepot;
+CommandCost CmdBuildRoadDepot(DoCommandFlag flags, TileIndex tile, RoadType rt, DiagDirection dir);
 CommandProc CmdConvertRoad;
 
 DEF_CMD_TRAIT(CMD_BUILD_LONG_ROAD,  CmdBuildLongRoad,  CMD_AUTO | CMD_NO_WATER | CMD_DEITY, CMDT_LANDSCAPE_CONSTRUCTION)
diff --git a/src/road_gui.cpp b/src/road_gui.cpp
index a777c9c1d1..beba949e4c 100644
--- a/src/road_gui.cpp
+++ b/src/road_gui.cpp
@@ -133,9 +133,8 @@ void CcRoadDepot(Commands cmd, const CommandCost &result, TileIndex tile, const
 {
 	if (result.Failed()) return;
 
-	auto [tile_, p1, p2, text] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_ROAD_DEPOT>::Args>(data);
+	auto [tile_, rt, dir] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_ROAD_DEPOT>::Args>(data);
 
-	DiagDirection dir = (DiagDirection)GB(p1, 0, 2);
 	if (_settings_client.sound.confirm) SndPlayTileFx(SND_1F_CONSTRUCTION_OTHER, tile);
 	if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 	ConnectRoadToStructure(tile, dir);
@@ -146,32 +145,22 @@ void CcRoadDepot(Commands cmd, const CommandCost &result, TileIndex tile, const
  * @param result Result of the build road stop command.
  * @param cmd Unused.
  * @param tile Start tile.
- * @param p1 bit 0..7: Width of the road stop.
- *           bit 8..15: Length of the road stop.
- * @param p2 bit 0: 0 For bus stops, 1 for truck stops.
- *           bit 1: 0 For normal stops, 1 for drive-through.
- *           bit 2: Allow stations directly adjacent to other stations.
- *           bit 3..4: Entrance direction (#DiagDirection) for normal stops.
- *           bit 3: #Axis of the road for drive-through stops.
- *           bit 5..9: The roadtype.
- *           bit 16..31: Station ID to join (NEW_STATION if build new one).
- * @param text Unused.
+ * @param data Command data.
  * @see CmdBuildRoadStop
  */
 void CcRoadStop(Commands cmd, const CommandCost &result, TileIndex tile, const CommandDataBuffer &data)
 {
 	if (result.Failed()) return;
 
-	auto [tile_, p1, p2, text] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_ROAD_STOP>::Args>(data);
+	auto [tile_, width, length, stop_type, is_drive_through, dir, rt, station_to_join, adjacent] = EndianBufferReader::ToValue<CommandTraits<CMD_BUILD_ROAD_STOP>::Args>(data);
 
-	DiagDirection dir = (DiagDirection)GB(p2, 3, 2);
 	if (_settings_client.sound.confirm) SndPlayTileFx(SND_1F_CONSTRUCTION_OTHER, tile);
 	if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
-	TileArea roadstop_area(tile, GB(p1, 0, 8), GB(p1, 8, 8));
+	TileArea roadstop_area(tile, width, length);
 	for (TileIndex cur_tile : roadstop_area) {
 		ConnectRoadToStructure(cur_tile, dir);
 		/* For a drive-through road stop build connecting road for other entrance. */
-		if (HasBit(p2, 1)) ConnectRoadToStructure(cur_tile, ReverseDiagDir(dir));
+		if (is_drive_through) ConnectRoadToStructure(cur_tile, ReverseDiagDir(dir));
 	}
 }
 
@@ -179,34 +168,24 @@ void CcRoadStop(Commands cmd, const CommandCost &result, TileIndex tile, const C
  * Place a new road stop.
  * @param start_tile First tile of the area.
  * @param end_tile Last tile of the area.
- * @param p2 bit 0: 0 For bus stops, 1 for truck stops.
- *           bit 2: Allow stations directly adjacent to other stations.
- *           bit 5..10: The roadtypes.
+ * @param stop_type Type of stop (bus/truck).
+ * @param adjacent Allow stations directly adjacent to other stations.
+ * @param rt The roadtypes.
  * @param err_msg Error message to show.
  * @see CcRoadStop()
  */
-static void PlaceRoadStop(TileIndex start_tile, TileIndex end_tile, uint32 p2, StringID err_msg)
+static void PlaceRoadStop(TileIndex start_tile, TileIndex end_tile, RoadStopType stop_type, bool adjacent, RoadType rt, StringID err_msg)
 {
 	TileArea ta(start_tile, end_tile);
-	uint32 p1 = (uint32)(ta.w | ta.h << 8);
-
-	uint8 ddir = _road_station_picker_orientation;
-	SB(p2, 16, 16, INVALID_STATION); // no station to join
-
-	if (ddir >= DIAGDIR_END) {
-		SetBit(p2, 1); // It's a drive-through stop.
-		ddir -= DIAGDIR_END; // Adjust picker result to actual direction.
-	}
-	p2 |= ddir << 3; // Set the DiagDirecion into p2 bits 3 and 4.
+	DiagDirection ddir = _road_station_picker_orientation;
+	bool drive_through = ddir >= DIAGDIR_END;
+	if (drive_through) ddir = static_cast<DiagDirection>(ddir - DIAGDIR_END); // Adjust picker result to actual direction.
 
 	auto proc = [=](bool test, StationID to_join) -> bool {
 		if (test) {
-			return Command<CMD_BUILD_ROAD_STOP>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_ROAD_STOP>()), ta.tile, p1, p2, {}).Succeeded();
+			return Command<CMD_BUILD_ROAD_STOP>::Do(CommandFlagsToDCFlags(GetCommandFlags<CMD_BUILD_ROAD_STOP>()), ta.tile, ta.w, ta.h, stop_type, drive_through, ddir, rt, INVALID_STATION, adjacent).Succeeded();
 		} else {
-			uint32 p2_final = p2;
-			if (to_join != INVALID_STATION) SB(p2_final, 16, 16, to_join);
-
-			return Command<CMD_BUILD_ROAD_STOP>::Post(err_msg, CcRoadStop, ta.tile, p1, p2_final, {});
+			return Command<CMD_BUILD_ROAD_STOP>::Post(err_msg, CcRoadStop, ta.tile, ta.w, ta.h, stop_type, drive_through, ddir, rt, to_join, adjacent);
 		}
 	};
 
@@ -568,7 +547,7 @@ struct BuildRoadToolbarWindow : Window {
 
 			case WID_ROT_DEPOT:
 				Command<CMD_BUILD_ROAD_DEPOT>::Post(this->rti->strings.err_depot, CcRoadDepot,
-						tile, _cur_roadtype << 2 | _road_depot_orientation, 0, {});
+						tile, _cur_roadtype, _road_depot_orientation);
 				break;
 
 			case WID_ROT_BUS_STATION:
@@ -700,9 +679,9 @@ struct BuildRoadToolbarWindow : Window {
 					if (this->IsWidgetLowered(WID_ROT_BUS_STATION)) {
 						if (_remove_button_clicked) {
 							TileArea ta(start_tile, end_tile);
-							Command<CMD_REMOVE_ROAD_STOP>::Post(this->rti->strings.err_remove_station[ROADSTOP_BUS], CcPlaySound_CONSTRUCTION_OTHER, ta.tile, ta.w | ta.h << 8, (_ctrl_pressed << 1) | ROADSTOP_BUS, {});
+							Command<CMD_REMOVE_ROAD_STOP>::Post(this->rti->strings.err_remove_station[ROADSTOP_BUS], CcPlaySound_CONSTRUCTION_OTHER, ta.tile, ta.w, ta.h, ROADSTOP_BUS, _ctrl_pressed);
 						} else {
-							PlaceRoadStop(start_tile, end_tile, _cur_roadtype << 5 | (_ctrl_pressed << 2) | ROADSTOP_BUS, this->rti->strings.err_build_station[ROADSTOP_BUS]);
+							PlaceRoadStop(start_tile, end_tile, ROADSTOP_BUS, _ctrl_pressed, _cur_roadtype, this->rti->strings.err_build_station[ROADSTOP_BUS]);
 						}
 					}
 					break;
@@ -712,9 +691,9 @@ struct BuildRoadToolbarWindow : Window {
 					if (this->IsWidgetLowered(WID_ROT_TRUCK_STATION)) {
 						if (_remove_button_clicked) {
 							TileArea ta(start_tile, end_tile);
-							Command<CMD_REMOVE_ROAD_STOP>::Post(this->rti->strings.err_remove_station[ROADSTOP_TRUCK], CcPlaySound_CONSTRUCTION_OTHER, ta.tile, ta.w | ta.h << 8, (_ctrl_pressed << 1) | ROADSTOP_TRUCK, {});
+							Command<CMD_REMOVE_ROAD_STOP>::Post(this->rti->strings.err_remove_station[ROADSTOP_TRUCK], CcPlaySound_CONSTRUCTION_OTHER, ta.tile, ta.w, ta.h, ROADSTOP_TRUCK, _ctrl_pressed);
 						} else {
-							PlaceRoadStop(start_tile, end_tile, _cur_roadtype << 5 | (_ctrl_pressed << 2) | ROADSTOP_TRUCK, this->rti->strings.err_build_station[ROADSTOP_TRUCK]);
+							PlaceRoadStop(start_tile, end_tile, ROADSTOP_TRUCK, _ctrl_pressed, _cur_roadtype, this->rti->strings.err_build_station[ROADSTOP_TRUCK]);
 						}
 					}
 					break;
diff --git a/src/script/api/script_airport.cpp b/src/script/api/script_airport.cpp
index 5927b16620..8ed4dbfcac 100644
--- a/src/script/api/script_airport.cpp
+++ b/src/script/api/script_airport.cpp
@@ -77,9 +77,7 @@
 	EnforcePrecondition(false, IsValidAirportType(type));
 	EnforcePrecondition(false, station_id == ScriptStation::STATION_NEW || station_id == ScriptStation::STATION_JOIN_ADJACENT || ScriptStation::IsValidStation(station_id));
 
-	uint p2 = station_id == ScriptStation::STATION_JOIN_ADJACENT ? 0 : 1;
-	p2 |= (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16;
-	return ScriptObject::Command<CMD_BUILD_AIRPORT>::Do(tile, type, p2, {});
+	return ScriptObject::Command<CMD_BUILD_AIRPORT>::Do(tile, type, 0, (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION), station_id == ScriptStation::STATION_JOIN_ADJACENT);
 }
 
 /* static */ bool ScriptAirport::RemoveAirport(TileIndex tile)
diff --git a/src/script/api/script_basestation.cpp b/src/script/api/script_basestation.cpp
index a249344101..788d549500 100644
--- a/src/script/api/script_basestation.cpp
+++ b/src/script/api/script_basestation.cpp
@@ -45,9 +45,9 @@
 	EnforcePreconditionCustomError(false, ::Utf8StringLength(text) < MAX_LENGTH_STATION_NAME_CHARS, ScriptError::ERR_PRECONDITION_STRING_TOO_LONG);
 
 	if (::Station::IsValidID(station_id)) {
-		return ScriptObject::Command<CMD_RENAME_STATION>::Do(0, station_id, 0, text);
+		return ScriptObject::Command<CMD_RENAME_STATION>::Do(station_id, text);
 	} else {
-		return ScriptObject::Command<CMD_RENAME_WAYPOINT>::Do(0, station_id, 0, text);
+		return ScriptObject::Command<CMD_RENAME_WAYPOINT>::Do(station_id, text);
 	}
 }
 
diff --git a/src/script/api/script_marine.cpp b/src/script/api/script_marine.cpp
index f368ec9185..8093233948 100644
--- a/src/script/api/script_marine.cpp
+++ b/src/script/api/script_marine.cpp
@@ -83,7 +83,7 @@
 	EnforcePrecondition(false, ::IsValidTile(front));
 	EnforcePrecondition(false, (::TileX(front) == ::TileX(tile)) != (::TileY(front) == ::TileY(tile)));
 
-	return ScriptObject::Command<CMD_BUILD_SHIP_DEPOT>::Do(tile, ::TileX(front) == ::TileX(tile), 0, {});
+	return ScriptObject::Command<CMD_BUILD_SHIP_DEPOT>::Do(tile, ::TileX(front) == ::TileX(tile) ? AXIS_Y : AXIS_X);
 }
 
 /* static */ bool ScriptMarine::BuildDock(TileIndex tile, StationID station_id)
@@ -92,9 +92,7 @@
 	EnforcePrecondition(false, ::IsValidTile(tile));
 	EnforcePrecondition(false, station_id == ScriptStation::STATION_NEW || station_id == ScriptStation::STATION_JOIN_ADJACENT || ScriptStation::IsValidStation(station_id));
 
-	uint p1 = station_id == ScriptStation::STATION_JOIN_ADJACENT ? 0 : 1;
-	uint p2 = (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16;
-	return ScriptObject::Command<CMD_BUILD_DOCK>::Do(tile, p1, p2, {});
+	return ScriptObject::Command<CMD_BUILD_DOCK>::Do(tile, ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION, station_id != ScriptStation::STATION_JOIN_ADJACENT);
 }
 
 /* static */ bool ScriptMarine::BuildBuoy(TileIndex tile)
@@ -102,7 +100,7 @@
 	EnforcePrecondition(false, ScriptObject::GetCompany() != OWNER_DEITY);
 	EnforcePrecondition(false, ::IsValidTile(tile));
 
-	return ScriptObject::Command<CMD_BUILD_BUOY>::Do(tile, 0, 0, {});
+	return ScriptObject::Command<CMD_BUILD_BUOY>::Do(tile);
 }
 
 /* static */ bool ScriptMarine::BuildLock(TileIndex tile)
diff --git a/src/script/api/script_rail.cpp b/src/script/api/script_rail.cpp
index ebba16343c..30a1085d48 100644
--- a/src/script/api/script_rail.cpp
+++ b/src/script/api/script_rail.cpp
@@ -142,9 +142,9 @@
 	EnforcePrecondition(false, ::TileX(tile) == ::TileX(front) || ::TileY(tile) == ::TileY(front));
 	EnforcePrecondition(false, IsRailTypeAvailable(GetCurrentRailType()));
 
-	uint entrance_dir = (::TileX(tile) == ::TileX(front)) ? (::TileY(tile) < ::TileY(front) ? 1 : 3) : (::TileX(tile) < ::TileX(front) ? 2 : 0);
+	DiagDirection entrance_dir = (::TileX(tile) == ::TileX(front)) ? (::TileY(tile) < ::TileY(front) ? DIAGDIR_SE : DIAGDIR_NW) : (::TileX(tile) < ::TileX(front) ? DIAGDIR_SW : DIAGDIR_NE);
 
-	return ScriptObject::Command<CMD_BUILD_TRAIN_DEPOT>::Do(tile, ScriptObject::GetRailType(), entrance_dir, {});
+	return ScriptObject::Command<CMD_BUILD_TRAIN_DEPOT>::Do(tile, (::RailType)ScriptObject::GetRailType(), entrance_dir);
 }
 
 /* static */ bool ScriptRail::BuildRailStation(TileIndex tile, RailTrack direction, uint num_platforms, uint platform_length, StationID station_id)
@@ -157,10 +157,8 @@
 	EnforcePrecondition(false, IsRailTypeAvailable(GetCurrentRailType()));
 	EnforcePrecondition(false, station_id == ScriptStation::STATION_NEW || station_id == ScriptStation::STATION_JOIN_ADJACENT || ScriptStation::IsValidStation(station_id));
 
-	uint32 p1 = GetCurrentRailType() | (platform_length << 16) | (num_platforms << 8);
-	if (direction == RAILTRACK_NW_SE) p1 |= (1 << 6);
-	if (station_id != ScriptStation::STATION_JOIN_ADJACENT) p1 |= (1 << 24);
-	return ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, p1, (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16, {});
+	bool adjacent = station_id != ScriptStation::STATION_JOIN_ADJACENT;
+	return ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, (::RailType)GetCurrentRailType(), direction == RAILTRACK_NW_SE ? AXIS_Y : AXIS_X, num_platforms, platform_length, STAT_CLASS_DFLT, 0, ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION, adjacent);
 }
 
 /* static */ bool ScriptRail::BuildNewGRFRailStation(TileIndex tile, RailTrack direction, uint num_platforms, uint platform_length, StationID station_id, CargoID cargo_id, IndustryType source_industry, IndustryType goal_industry, int distance, bool source_station)
@@ -176,10 +174,6 @@
 	EnforcePrecondition(false, source_industry == ScriptIndustryType::INDUSTRYTYPE_UNKNOWN || source_industry == ScriptIndustryType::INDUSTRYTYPE_TOWN || ScriptIndustryType::IsValidIndustryType(source_industry));
 	EnforcePrecondition(false, goal_industry   == ScriptIndustryType::INDUSTRYTYPE_UNKNOWN || goal_industry   == ScriptIndustryType::INDUSTRYTYPE_TOWN || ScriptIndustryType::IsValidIndustryType(goal_industry));
 
-	uint32 p1 = GetCurrentRailType() | (platform_length << 16) | (num_platforms << 8);
-	if (direction == RAILTRACK_NW_SE) p1 |= 1 << 6;
-	if (station_id != ScriptStation::STATION_JOIN_ADJACENT) p1 |= (1 << 24);
-
 	const GRFFile *file;
 	uint16 res = GetAiPurchaseCallbackResult(
 		GSF_STATIONS,
@@ -193,7 +187,10 @@
 		std::min(15u, num_platforms) << 4 | std::min(15u, platform_length),
 		&file
 	);
-	uint32 p2 = (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16;
+
+	Axis axis = direction == RAILTRACK_NW_SE ? AXIS_Y : AXIS_X;
+	bool adjacent = station_id != ScriptStation::STATION_JOIN_ADJACENT;
+	StationID to_join = ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION;
 	if (res != CALLBACK_FAILED) {
 		int index = 0;
 		const StationSpec *spec = StationClass::GetByGrf(file->grfid, res, &index);
@@ -201,11 +198,11 @@
 			Debug(grf, 1, "{} returned an invalid station ID for 'AI construction/purchase selection (18)' callback", file->filename);
 		} else {
 			/* We might have gotten an usable station spec. Try to build it, but if it fails we'll fall back to the original station. */
-			if (ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, p1, p2 | spec->cls_id | index << 8, {})) return true;
+			if (ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, (::RailType)GetCurrentRailType(), axis, num_platforms, platform_length, spec->cls_id, index, to_join, adjacent)) return true;
 		}
 	}
 
-	return ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, p1, p2, {});
+	return ScriptObject::Command<CMD_BUILD_RAIL_STATION>::Do(tile, (::RailType)GetCurrentRailType(), axis, num_platforms, platform_length, STAT_CLASS_DFLT, 0, to_join, adjacent);
 }
 
 /* static */ bool ScriptRail::BuildRailWaypoint(TileIndex tile)
@@ -216,7 +213,7 @@
 	EnforcePrecondition(false, GetRailTracks(tile) == RAILTRACK_NE_SW || GetRailTracks(tile) == RAILTRACK_NW_SE);
 	EnforcePrecondition(false, IsRailTypeAvailable(GetCurrentRailType()));
 
-	return ScriptObject::Command<CMD_BUILD_RAIL_WAYPOINT>::Do(tile, GetCurrentRailType() | (GetRailTracks(tile) == RAILTRACK_NE_SW ? AXIS_X : AXIS_Y) << 6 | 1 << 8 | 1 << 16, STAT_CLASS_WAYP | INVALID_STATION << 16, {});
+	return ScriptObject::Command<CMD_BUILD_RAIL_WAYPOINT>::Do(tile, GetRailTracks(tile) == RAILTRACK_NE_SW ? AXIS_X : AXIS_Y, 1, 1, STAT_CLASS_WAYP, 0, INVALID_STATION, false);
 }
 
 /* static */ bool ScriptRail::RemoveRailWaypointTileRectangle(TileIndex tile, TileIndex tile2, bool keep_rail)
@@ -225,7 +222,7 @@
 	EnforcePrecondition(false, ::IsValidTile(tile));
 	EnforcePrecondition(false, ::IsValidTile(tile2));
 
-	return ScriptObject::Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Do(tile, tile2, keep_rail ? 1 : 0, {});
+	return ScriptObject::Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Do(tile, tile2, keep_rail);
 }
 
 /* static */ bool ScriptRail::RemoveRailStationTileRectangle(TileIndex tile, TileIndex tile2, bool keep_rail)
@@ -234,7 +231,7 @@
 	EnforcePrecondition(false, ::IsValidTile(tile));
 	EnforcePrecondition(false, ::IsValidTile(tile2));
 
-	return ScriptObject::Command<CMD_REMOVE_FROM_RAIL_STATION>::Do(tile, tile2, keep_rail ? 1 : 0, {});
+	return ScriptObject::Command<CMD_REMOVE_FROM_RAIL_STATION>::Do(tile, tile2, keep_rail);
 }
 
 /* static */ uint ScriptRail::GetRailTracks(TileIndex tile)
diff --git a/src/script/api/script_road.cpp b/src/script/api/script_road.cpp
index 26cdb5190a..c629396b70 100644
--- a/src/script/api/script_road.cpp
+++ b/src/script/api/script_road.cpp
@@ -529,9 +529,9 @@ static bool NeighbourHasReachableRoad(::RoadType rt, TileIndex start_tile, DiagD
 	EnforcePrecondition(false, ::TileX(tile) == ::TileX(front) || ::TileY(tile) == ::TileY(front));
 	EnforcePrecondition(false, IsRoadTypeAvailable(GetCurrentRoadType()));
 
-	uint entrance_dir = (::TileX(tile) == ::TileX(front)) ? (::TileY(tile) < ::TileY(front) ? 1 : 3) : (::TileX(tile) < ::TileX(front) ? 2 : 0);
+	DiagDirection entrance_dir = (::TileX(tile) == ::TileX(front)) ? (::TileY(tile) < ::TileY(front) ? DIAGDIR_SE : DIAGDIR_NW) : (::TileX(tile) < ::TileX(front) ? DIAGDIR_SW : DIAGDIR_NE);
 
-	return ScriptObject::Command<CMD_BUILD_ROAD_DEPOT>::Do(tile, entrance_dir | (ScriptObject::GetRoadType() << 2), 0, {});
+	return ScriptObject::Command<CMD_BUILD_ROAD_DEPOT>::Do(tile, ScriptObject::GetRoadType(), entrance_dir);
 }
 
 /* static */ bool ScriptRoad::_BuildRoadStationInternal(TileIndex tile, TileIndex front, RoadVehicleType road_veh_type, bool drive_through, StationID station_id)
@@ -545,20 +545,10 @@ static bool NeighbourHasReachableRoad(::RoadType rt, TileIndex start_tile, DiagD
 	EnforcePrecondition(false, road_veh_type == ROADVEHTYPE_BUS || road_veh_type == ROADVEHTYPE_TRUCK);
 	EnforcePrecondition(false, IsRoadTypeAvailable(GetCurrentRoadType()));
 
-	uint entrance_dir;
-	if (drive_through) {
-		entrance_dir = ::TileY(tile) != ::TileY(front);
-	} else {
-		entrance_dir = (::TileX(tile) == ::TileX(front)) ? (::TileY(tile) < ::TileY(front) ? 1 : 3) : (::TileX(tile) < ::TileX(front) ? 2 : 0);
-	}
-
-	uint p2 = station_id == ScriptStation::STATION_JOIN_ADJACENT ? 0 : 4;
-	p2 |= drive_through ? 2 : 0;
-	p2 |= road_veh_type == ROADVEHTYPE_TRUCK ? 1 : 0;
-	p2 |= ScriptObject::GetRoadType() << 5;
-	p2 |= entrance_dir << 3;
-	p2 |= (ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16;
-	return ScriptObject::Command<CMD_BUILD_ROAD_STOP>::Do(tile, 1 | 1 << 8, p2, {});
+	DiagDirection entrance_dir = DiagdirBetweenTiles(tile, front);
+	RoadStopType stop_type = road_veh_type == ROADVEHTYPE_TRUCK ? ROADSTOP_TRUCK : ROADSTOP_BUS;
+	StationID to_join = ScriptStation::IsValidStation(station_id) ? station_id : INVALID_STATION;
+	return ScriptObject::Command<CMD_BUILD_ROAD_STOP>::Do(tile, 1, 1, stop_type, drive_through, entrance_dir, ScriptObject::GetRoadType(), to_join, station_id != ScriptStation::STATION_JOIN_ADJACENT);
 }
 
 /* static */ bool ScriptRoad::BuildRoadStation(TileIndex tile, TileIndex front, RoadVehicleType road_veh_type, StationID station_id)
@@ -612,7 +602,7 @@ static bool NeighbourHasReachableRoad(::RoadType rt, TileIndex start_tile, DiagD
 	EnforcePrecondition(false, IsTileType(tile, MP_STATION));
 	EnforcePrecondition(false, IsRoadStop(tile));
 
-	return ScriptObject::Command<CMD_REMOVE_ROAD_STOP>::Do(tile, 1 | 1 << 8, GetRoadStopType(tile), {});
+	return ScriptObject::Command<CMD_REMOVE_ROAD_STOP>::Do(tile, 1, 1, GetRoadStopType(tile), false);
 }
 
 /* static */ Money ScriptRoad::GetBuildCost(RoadType roadtype, BuildType build_type)
diff --git a/src/script/api/script_station.cpp b/src/script/api/script_station.cpp
index 34e7d84341..3b38844df6 100644
--- a/src/script/api/script_station.cpp
+++ b/src/script/api/script_station.cpp
@@ -240,5 +240,5 @@ template<bool Tfrom, bool Tvia>
 	EnforcePrecondition(false, IsValidStation(station_id));
 	EnforcePrecondition(false, HasStationType(station_id, STATION_AIRPORT));
 
-	return ScriptObject::Command<CMD_OPEN_CLOSE_AIRPORT>::Do(0, station_id, 0, {});
+	return ScriptObject::Command<CMD_OPEN_CLOSE_AIRPORT>::Do(station_id);
 }
diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
index 33f86146c4..bdc58588b9 100644
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -1241,37 +1241,23 @@ static void RestoreTrainReservation(Train *v)
  * Build rail station
  * @param flags operation to perform
  * @param tile_org northern most position of station dragging/placement
- * @param p1 various bitstuffed elements
- * - p1 = (bit  0- 5) - railtype
- * - p1 = (bit  6)    - orientation (Axis)
- * - p1 = (bit  8-15) - number of tracks
- * - p1 = (bit 16-23) - platform length
- * - p1 = (bit 24)    - allow stations directly adjacent to other stations.
- * @param p2 various bitstuffed elements
- * - p2 = (bit  0- 7) - custom station class
- * - p2 = (bit  8-15) - custom station id
- * - p2 = (bit 16-31) - station ID to join (NEW_STATION if build new one)
- * @param text unused
+ * @param rt railtype
+ * @param axis orientation (Axis)
+ * @param numtracks number of tracks
+ * @param plat_len platform length
+ * @param spec_class custom station class
+ * @param spec_index custom station id
+ * @param station_to_join station ID to join (NEW_STATION if build new one)
+ * @param adjacent allow stations directly adjacent to other stations.
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildRailStation(DoCommandFlag flags, TileIndex tile_org, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildRailStation(DoCommandFlag flags, TileIndex tile_org, RailType rt, Axis axis, byte numtracks, byte plat_len, StationClassID spec_class, byte spec_index, StationID station_to_join, bool adjacent)
 {
-	/* Unpack parameters */
-	RailType rt    = Extract<RailType, 0, 6>(p1);
-	Axis axis      = Extract<Axis, 6, 1>(p1);
-	byte numtracks = GB(p1,  8, 8);
-	byte plat_len  = GB(p1, 16, 8);
-	bool adjacent  = HasBit(p1, 24);
-
-	StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
-	byte spec_index           = GB(p2, 8, 8);
-	StationID station_to_join = GB(p2, 16, 16);
-
 	/* Does the authority allow this? */
 	CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
 	if (ret.Failed()) return ret;
 
-	if (!ValParamRailtype(rt)) return CMD_ERROR;
+	if (!ValParamRailtype(rt) || !IsEnumValid(axis)) return CMD_ERROR;
 
 	/* Check if the given station class is valid */
 	if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
@@ -1657,21 +1643,19 @@ CommandCost RemoveFromRailBaseStation(TileArea ta, std::vector<T *> &affected_st
  * This allows for custom-built station with holes and weird layouts
  * @param flags operation to perform
  * @param start tile of station piece to remove
- * @param p1 start_tile
- * @param p2 various bitstuffed elements
- * - p2 = bit 0 - if set keep the rail
- * @param text unused
+ * @param end other edge of the rect to remove
+ * @param keep_rail if set keep the rail
  * @return the cost of this operation or an error
  */
-CommandCost CmdRemoveFromRailStation(DoCommandFlag flags, TileIndex start, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRemoveFromRailStation(DoCommandFlag flags, TileIndex start, TileIndex end, bool keep_rail)
 {
-	TileIndex end = p1 == 0 ? start : p1;
+	if (end == 0) end = start;
 	if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
 
 	TileArea ta(start, end);
 	std::vector<Station *> affected_stations;
 
-	CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
+	CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], keep_rail);
 	if (ret.Failed()) return ret;
 
 	/* Do all station specific functions here. */
@@ -1691,21 +1675,19 @@ CommandCost CmdRemoveFromRailStation(DoCommandFlag flags, TileIndex start, uint3
  * This allows for custom-built waypoint with holes and weird layouts
  * @param flags operation to perform
  * @param start tile of waypoint piece to remove
- * @param p1 start_tile
- * @param p2 various bitstuffed elements
- * - p2 = bit 0 - if set keep the rail
- * @param text unused
+ * @param end other edge of the rect to remove
+ * @param keep_rail if set keep the rail
  * @return the cost of this operation or an error
  */
-CommandCost CmdRemoveFromRailWaypoint(DoCommandFlag flags, TileIndex start, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRemoveFromRailWaypoint(DoCommandFlag flags, TileIndex start, TileIndex end, bool keep_rail)
 {
-	TileIndex end = p1 == 0 ? start : p1;
+	if (end == 0) end = start;
 	if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
 
 	TileArea ta(start, end);
 	std::vector<Waypoint *> affected_stations;
 
-	return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
+	return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], keep_rail);
 }
 
 
@@ -1756,7 +1738,7 @@ static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
 {
 	/* if there is flooding, remove platforms tile by tile */
 	if (_current_company == OWNER_WATER) {
-		return Command<CMD_REMOVE_FROM_RAIL_STATION>::Do(DC_EXEC, tile, 0, 0, {});
+		return Command<CMD_REMOVE_FROM_RAIL_STATION>::Do(DC_EXEC, tile, 0, false);
 	}
 
 	Station *st = Station::GetByTile(tile);
@@ -1777,7 +1759,7 @@ static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
 {
 	/* if there is flooding, remove waypoints tile by tile */
 	if (_current_company == OWNER_WATER) {
-		return Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Do(DC_EXEC, tile, 0, 0, {});
+		return Command<CMD_REMOVE_FROM_RAIL_WAYPOINT>::Do(DC_EXEC, tile, 0, false);
 	}
 
 	return RemoveRailStation(Waypoint::GetByTile(tile), flags, _price[PR_CLEAR_WAYPOINT_RAIL]);
@@ -1824,32 +1806,23 @@ static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID statio
  * Build a bus or truck stop.
  * @param flags Operation to perform.
  * @param tile Northernmost tile of the stop.
- * @param p1 bit 0..7: Width of the road stop.
- *           bit 8..15: Length of the road stop.
- * @param p2 bit 0: 0 For bus stops, 1 for truck stops.
- *           bit 1: 0 For normal stops, 1 for drive-through.
- *           bit 2: Allow stations directly adjacent to other stations.
- *           bit 3..4: Entrance direction (#DiagDirection) for normal stops.
- *           bit 3: #Axis of the road for drive-through stops.
- *           bit 5..10: The roadtype.
- *           bit 16..31: Station ID to join (NEW_STATION if build new one).
- * @param text Unused.
+ * @param width Width of the road stop.
+ * @param length Length of the road stop.
+ * @param stop_type Type of road stop (bus/truck).
+ * @param is_drive_through False for normal stops, true for drive-through.
+ * @param ddir Entrance direction (#DiagDirection) for normal stops. Converted to the axis for drive-through stops.
+ * @param rt The roadtype.
+ * @param station_to_join Station ID to join (NEW_STATION if build new one).
+ * @param adjacent Allow stations directly adjacent to other stations.
  * @return The cost of this operation or an error.
  */
-CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint8 width, uint8 length, RoadStopType stop_type, bool is_drive_through, DiagDirection ddir, RoadType rt, StationID station_to_join, bool adjacent)
 {
-	bool type = HasBit(p2, 0);
-	bool is_drive_through = HasBit(p2, 1);
-	RoadType rt = Extract<RoadType, 5, 6>(p2);
-	if (!ValParamRoadType(rt)) return CMD_ERROR;
-	StationID station_to_join = GB(p2, 16, 16);
+	if (!ValParamRoadType(rt) || !IsEnumValid(ddir) || stop_type >= ROADSTOP_END) return CMD_ERROR;
 	bool reuse = (station_to_join != NEW_STATION);
 	if (!reuse) station_to_join = INVALID_STATION;
 	bool distant_join = (station_to_join != INVALID_STATION);
 
-	uint8 width = (uint8)GB(p1, 0, 8);
-	uint8 length = (uint8)GB(p1, 8, 8);
-
 	/* Check if the requested road stop is too big */
 	if (width > _settings_game.station.station_spread || length > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
 	/* Check for incorrect width / length. */
@@ -1864,34 +1837,26 @@ CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, uin
 	/* Trams only have drive through stops */
 	if (!is_drive_through && RoadTypeIsTram(rt)) return CMD_ERROR;
 
-	DiagDirection ddir;
-	Axis axis;
-	if (is_drive_through) {
-		/* By definition axis is valid, due to there being 2 axes and reading 1 bit. */
-		axis = Extract<Axis, 3, 1>(p2);
-		ddir = AxisToDiagDir(axis);
-	} else {
-		/* By definition ddir is valid, due to there being 4 diagonal directions and reading 2 bits. */
-		ddir = Extract<DiagDirection, 3, 2>(p2);
-		axis = DiagDirToAxis(ddir);
-	}
+	Axis axis = DiagDirToAxis(ddir);
 
 	CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
 	if (ret.Failed()) return ret;
 
+	bool is_truck_stop = stop_type != ROADSTOP_BUS;
+
 	/* Total road stop cost. */
-	CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
+	CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[is_truck_stop ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
 	StationID est = INVALID_STATION;
-	ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, type, axis, &est, rt);
+	ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, is_truck_stop, axis, &est, rt);
 	if (ret.Failed()) return ret;
 	cost.AddCost(ret);
 
 	Station *st = nullptr;
-	ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 2), roadstop_area, &st);
+	ret = FindJoiningRoadStop(est, station_to_join, adjacent, roadstop_area, &st);
 	if (ret.Failed()) return ret;
 
 	/* Check if this number of road stops can be allocated. */
-	if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
+	if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(is_truck_stop ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
 
 	ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
 	if (ret.Failed()) return ret;
@@ -1911,21 +1876,21 @@ CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, uin
 
 			RoadStop *road_stop = new RoadStop(cur_tile);
 			/* Insert into linked list of RoadStops. */
-			RoadStop **currstop = FindRoadStopSpot(type, st);
+			RoadStop **currstop = FindRoadStopSpot(is_truck_stop, st);
 			*currstop = road_stop;
 
-			if (type) {
+			if (is_truck_stop) {
 				st->truck_station.Add(cur_tile);
 			} else {
 				st->bus_station.Add(cur_tile);
 			}
 
 			/* Initialize an empty station. */
-			st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
+			st->AddFacility(is_truck_stop ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
 
 			st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
 
-			RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
+			RoadStopType rs_type = is_truck_stop ? ROADSTOP_TRUCK : ROADSTOP_BUS;
 			if (is_drive_through) {
 				/* Update company infrastructure counts. If the current tile is a normal road tile, remove the old
 				 * bits first. */
@@ -1956,7 +1921,7 @@ CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, uin
 	}
 
 	if (st != nullptr) {
-		st->AfterStationTileSetChange(true, type ? STATION_TRUCK: STATION_BUS);
+		st->AfterStationTileSetChange(true, is_truck_stop ? STATION_TRUCK: STATION_BUS);
 	}
 	return cost;
 }
@@ -2079,25 +2044,21 @@ static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
  * Remove bus or truck stops.
  * @param flags Operation to perform.
  * @param tile Northernmost tile of the removal area.
- * @param p1 bit 0..7: Width of the removal area.
- *           bit 8..15: Height of the removal area.
- * @param p2 bit 0: 0 For bus stops, 1 for truck stops.
- * @param p2 bit 1: 0 to keep roads of all drive-through stops, 1 to remove them.
- * @param text Unused.
+ * @param width Width of the removal area.
+ * @param height Height of the removal area.
+ * @param stop_type Type of stop (bus/truck).
+ * @param remove_road Remove roads of drive-through stops?
  * @return The cost of this operation or an error.
  */
-CommandCost CmdRemoveRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRemoveRoadStop(DoCommandFlag flags, TileIndex tile, uint8 width, uint height, RoadStopType stop_type, bool remove_road)
 {
-	uint8 width = (uint8)GB(p1, 0, 8);
-	uint8 height = (uint8)GB(p1, 8, 8);
-	bool keep_drive_through_roads = !HasBit(p2, 1);
-
+	if (stop_type >= ROADSTOP_END) return CMD_ERROR;
 	/* Check for incorrect width / height. */
 	if (width == 0 || height == 0) return CMD_ERROR;
 	/* Check if the first tile and the last tile are valid */
 	if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
 	/* Bankrupting company is not supposed to remove roads, there may be road vehicles. */
-	if (!keep_drive_through_roads && (flags & DC_BANKRUPT)) return CMD_ERROR;
+	if (remove_road && (flags & DC_BANKRUPT)) return CMD_ERROR;
 
 	TileArea roadstop_area(tile, width, height);
 
@@ -2107,7 +2068,7 @@ CommandCost CmdRemoveRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, ui
 
 	for (TileIndex cur_tile : roadstop_area) {
 		/* Make sure the specified tile is a road stop of the correct type */
-		if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
+		if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || GetRoadStopType(cur_tile) != stop_type) continue;
 
 		/* Save information on to-be-restored roads before the stop is removed. */
 		RoadBits road_bits = ROAD_NONE;
@@ -2119,7 +2080,7 @@ CommandCost CmdRemoveRoadStop(DoCommandFlag flags, TileIndex tile, uint32 p1, ui
 				if (road_type[rtt] == INVALID_ROADTYPE) continue;
 				road_owner[rtt] = GetRoadOwner(cur_tile, rtt);
 				/* If we don't want to preserve our roads then restore only roads of others. */
-				if (!keep_drive_through_roads && road_owner[rtt] == _current_company) road_type[rtt] = INVALID_ROADTYPE;
+				if (remove_road && road_owner[rtt] == _current_company) road_type[rtt] = INVALID_ROADTYPE;
 			}
 			road_bits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(cur_tile)));
 		}
@@ -2236,23 +2197,17 @@ void UpdateAirportsNoise()
  * Place an Airport.
  * @param flags operation to perform
  * @param tile tile where airport will be built
- * @param p1
- * - p1 = (bit  0- 7) - airport type, @see airport.h
- * - p1 = (bit  8-15) - airport layout
- * @param p2 various bitstuffed elements
- * - p2 = (bit     0) - allow airports directly adjacent to other airports.
- * - p2 = (bit 16-31) - station ID to join (NEW_STATION if build new one)
- * @param text unused
+ * @param airport_type airport type, @see airport.h
+ * @param layout airport layout
+ * @param station_to_join station ID to join (NEW_STATION if build new one)
+ * @param allow_adjacent allow airports directly adjacent to other airports.
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildAirport(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildAirport(DoCommandFlag flags, TileIndex tile, byte airport_type, byte layout, StationID station_to_join, bool allow_adjacent)
 {
-	StationID station_to_join = GB(p2, 16, 16);
 	bool reuse = (station_to_join != NEW_STATION);
 	if (!reuse) station_to_join = INVALID_STATION;
 	bool distant_join = (station_to_join != INVALID_STATION);
-	byte airport_type = GB(p1, 0, 8);
-	byte layout = GB(p1, 8, 8);
 
 	if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
 
@@ -2313,7 +2268,7 @@ CommandCost CmdBuildAirport(DoCommandFlag flags, TileIndex tile, uint32 p1, uint
 	}
 
 	Station *st = nullptr;
-	ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
+	ret = FindJoiningStation(INVALID_STATION, station_to_join, allow_adjacent, airport_area, &st);
 	if (ret.Failed()) return ret;
 
 	/* Distant join */
@@ -2456,16 +2411,13 @@ static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
 /**
  * Open/close an airport to incoming aircraft.
  * @param flags Operation to perform.
- * @param tile Unused.
- * @param p1 Station ID of the airport.
- * @param p2 Unused.
- * @param text unused
+ * @param station_id Station ID of the airport.
  * @return the cost of this operation or an error
  */
-CommandCost CmdOpenCloseAirport(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdOpenCloseAirport(DoCommandFlag flags, StationID station_id)
 {
-	if (!Station::IsValidID(p1)) return CMD_ERROR;
-	Station *st = Station::Get(p1);
+	if (!Station::IsValidID(station_id)) return CMD_ERROR;
+	Station *st = Station::Get(station_id);
 
 	if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
 
@@ -2512,14 +2464,12 @@ static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
  * Build a dock/haven.
  * @param flags operation to perform
  * @param tile tile where dock will be built
- * @param p1 (bit 0) - allow docks directly adjacent to other docks.
- * @param p2 bit 16-31: station ID to join (NEW_STATION if build new one)
- * @param text unused
+ * @param station_to_join station ID to join (NEW_STATION if build new one)
+ * @param adjacent allow docks directly adjacent to other docks.
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildDock(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildDock(DoCommandFlag flags, TileIndex tile, StationID station_to_join, bool adjacent)
 {
-	StationID station_to_join = GB(p2, 16, 16);
 	bool reuse = (station_to_join != NEW_STATION);
 	if (!reuse) station_to_join = INVALID_STATION;
 	bool distant_join = (station_to_join != INVALID_STATION);
@@ -2567,7 +2517,7 @@ CommandCost CmdBuildDock(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32
 
 	/* middle */
 	Station *st = nullptr;
-	ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
+	ret = FindJoiningStation(INVALID_STATION, station_to_join, adjacent, dock_area, &st);
 	if (ret.Failed()) return ret;
 
 	/* Distant join */
@@ -3930,15 +3880,13 @@ static bool IsUniqueStationName(const std::string &name)
 /**
  * Rename a station
  * @param flags operation to perform
- * @param tile unused
- * @param p1 station ID that is to be renamed
- * @param p2 unused
+ * @param station_id station ID that is to be renamed
  * @param text the new name or an empty string when resetting to the default
  * @return the cost of this operation or an error
  */
-CommandCost CmdRenameStation(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRenameStation(DoCommandFlag flags, StationID station_id, const std::string &text)
 {
-	Station *st = Station::GetIfValid(p1);
+	Station *st = Station::GetIfValid(station_id);
 	if (st == nullptr) return CMD_ERROR;
 
 	CommandCost ret = CheckOwnership(st->owner);
@@ -4244,7 +4192,7 @@ static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_o
 	} else {
 		if (IsDriveThroughStopTile(tile)) {
 			/* Remove the drive-through road stop */
-			Command<CMD_REMOVE_ROAD_STOP>::Do(DC_EXEC | DC_BANKRUPT, tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, {});
+			Command<CMD_REMOVE_ROAD_STOP>::Do(DC_EXEC | DC_BANKRUPT, tile, 1, 1, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, false);
 			assert(IsTileType(tile, MP_ROAD));
 			/* Change owner of tile and all roadtypes */
 			ChangeTileOwner(tile, old_owner, new_owner);
diff --git a/src/station_cmd.h b/src/station_cmd.h
index 8e1facc250..6e85ffbfa2 100644
--- a/src/station_cmd.h
+++ b/src/station_cmd.h
@@ -11,15 +11,18 @@
 #define STATION_CMD_H
 
 #include "command_type.h"
+#include "station_type.h"
 
-CommandProc CmdBuildAirport;
-CommandProc CmdBuildDock;
-CommandProc CmdBuildRailStation;
-CommandProc CmdRemoveFromRailStation;
-CommandProc CmdBuildRoadStop;
-CommandProc CmdRemoveRoadStop;
-CommandProc CmdRenameStation;
-CommandProc CmdOpenCloseAirport;
+enum StationClassID : byte;
+
+CommandCost CmdBuildAirport(DoCommandFlag flags, TileIndex tile, byte airport_type, byte layout, StationID station_to_join, bool allow_adjacent);
+CommandCost CmdBuildDock(DoCommandFlag flags, TileIndex tile, StationID station_to_join, bool adjacent);
+CommandCost CmdBuildRailStation(DoCommandFlag flags, TileIndex tile_org, RailType rt, Axis axis, byte numtracks, byte plat_len, StationClassID spec_class, byte spec_index, StationID station_to_join, bool adjacent);
+CommandCost CmdRemoveFromRailStation(DoCommandFlag flags, TileIndex start, TileIndex end, bool keep_rail);
+CommandCost CmdBuildRoadStop(DoCommandFlag flags, TileIndex tile, uint8 width, uint8 length, RoadStopType stop_type, bool is_drive_through, DiagDirection ddir, RoadType rt, StationID station_to_join, bool adjacent);
+CommandCost CmdRemoveRoadStop(DoCommandFlag flags, TileIndex tile, uint8 width, uint height, RoadStopType stop_type, bool remove_road);
+CommandCost CmdRenameStation(DoCommandFlag flags, StationID station_id, const std::string &text);
+CommandCost CmdOpenCloseAirport(DoCommandFlag flags, StationID station_id);
 
 DEF_CMD_TRAIT(CMD_BUILD_AIRPORT,            CmdBuildAirport,          CMD_AUTO | CMD_NO_WATER, CMDT_LANDSCAPE_CONSTRUCTION)
 DEF_CMD_TRAIT(CMD_BUILD_DOCK,               CmdBuildDock,             CMD_AUTO,                CMDT_LANDSCAPE_CONSTRUCTION)
diff --git a/src/station_gui.cpp b/src/station_gui.cpp
index 1177e558c1..9233878212 100644
--- a/src/station_gui.cpp
+++ b/src/station_gui.cpp
@@ -1948,7 +1948,7 @@ struct StationViewWindow : public Window {
 				break;
 
 			case WID_SV_CLOSE_AIRPORT:
-				Command<CMD_OPEN_CLOSE_AIRPORT>::Post(0, this->window_number, 0, {});
+				Command<CMD_OPEN_CLOSE_AIRPORT>::Post(this->window_number);
 				break;
 
 			case WID_SV_TRAINS:   // Show list of scheduled trains to this station
@@ -2085,7 +2085,7 @@ struct StationViewWindow : public Window {
 	{
 		if (str == nullptr) return;
 
-		Command<CMD_RENAME_STATION>::Post(STR_ERROR_CAN_T_RENAME_STATION, 0, this->window_number, 0, str);
+		Command<CMD_RENAME_STATION>::Post(STR_ERROR_CAN_T_RENAME_STATION, this->window_number, str);
 	}
 
 	void OnResize() override
diff --git a/src/station_type.h b/src/station_type.h
index 36ce7c3ce7..7696c0f087 100644
--- a/src/station_type.h
+++ b/src/station_type.h
@@ -41,9 +41,10 @@ enum StationType {
 };
 
 /** Types of RoadStops */
-enum RoadStopType {
+enum RoadStopType : byte {
 	ROADSTOP_BUS,    ///< A standard stop for buses
 	ROADSTOP_TRUCK,  ///< A standard stop for trucks
+	ROADSTOP_END,    ///< End of valid types
 };
 
 /** The facilities a station might be having */
diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 07c13adcda..3c96f79ad8 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -95,15 +95,12 @@ static void MarkCanalsAndRiversAroundDirty(TileIndex tile)
  * Build a ship depot.
  * @param flags type of operation
  * @param tile tile where ship depot is built
- * @param p1 bit 0 depot orientation (Axis)
- * @param p2 unused
- * @param text unused
+ * @param axis depot orientation (Axis)
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildShipDepot(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildShipDepot(DoCommandFlag flags, TileIndex tile, Axis axis)
 {
-	Axis axis = Extract<Axis, 0, 1>(p1);
-
+	if (!IsEnumValid(axis)) return CMD_ERROR;
 	TileIndex tile2 = tile + (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
 
 	if (!HasTileWaterGround(tile) || !HasTileWaterGround(tile2)) {
diff --git a/src/water_cmd.h b/src/water_cmd.h
index ccd18f7639..4d3375aa39 100644
--- a/src/water_cmd.h
+++ b/src/water_cmd.h
@@ -12,7 +12,7 @@
 
 #include "command_type.h"
 
-CommandProc CmdBuildShipDepot;
+CommandCost CmdBuildShipDepot(DoCommandFlag flags, TileIndex tile, Axis axis);
 CommandProc CmdBuildCanal;
 CommandProc CmdBuildLock;
 
diff --git a/src/waypoint_cmd.cpp b/src/waypoint_cmd.cpp
index a3edf71e89..85c52c98fa 100644
--- a/src/waypoint_cmd.cpp
+++ b/src/waypoint_cmd.cpp
@@ -164,30 +164,18 @@ extern CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta,
  * piece of rail
  * @param flags type of operation
  * @param start_tile northern most tile where waypoint will be built
- * @param p1 various bitstuffed elements
- * - p1 = (bit  0- 5) - railtype (not used)
- * - p1 = (bit  6)    - orientation (Axis)
- * - p1 = (bit  8-15) - width of waypoint
- * - p1 = (bit 16-23) - height of waypoint
- * - p1 = (bit 24)    - allow waypoints directly adjacent to other waypoints.
- * @param p2 various bitstuffed elements
- * - p2 = (bit  0- 7) - custom station class
- * - p2 = (bit  8-15) - custom station id
- * @param text unused
+ * @param axis orientation (Axis)
+ * @param width width of waypoint
+ * @param height height of waypoint
+ * @param spec_class custom station class
+ * @param spec_index custom station id
+ * @param station_to_join station ID to join (NEW_STATION if build new one)
+ * @param adjacent allow waypoints directly adjacent to other waypoints.
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildRailWaypoint(DoCommandFlag flags, TileIndex start_tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildRailWaypoint(DoCommandFlag flags, TileIndex start_tile, Axis axis, byte width, byte height, StationClassID spec_class, byte spec_index, StationID station_to_join, bool adjacent)
 {
-	/* Unpack parameters */
-	Axis axis      = Extract<Axis, 6, 1>(p1);
-	byte width     = GB(p1,  8, 8);
-	byte height    = GB(p1, 16, 8);
-	bool adjacent  = HasBit(p1, 24);
-
-	StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
-	byte spec_index           = GB(p2, 8, 8);
-	StationID station_to_join = GB(p2, 16, 16);
-
+	if (!IsEnumValid(axis)) return CMD_ERROR;
 	/* Check if the given station class is valid */
 	if (spec_class != STAT_CLASS_WAYP) return CMD_ERROR;
 	if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
@@ -299,12 +287,9 @@ CommandCost CmdBuildRailWaypoint(DoCommandFlag flags, TileIndex start_tile, uint
  * Build a buoy.
  * @param flags operation to perform
  * @param tile tile where to place the buoy
- * @param p1 unused
- * @param p2 unused
- * @param text unused
  * @return the cost of this operation or an error
  */
-CommandCost CmdBuildBuoy(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdBuildBuoy(DoCommandFlag flags, TileIndex tile)
 {
 	if (tile == 0 || !HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
 	if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
@@ -409,15 +394,13 @@ static bool IsUniqueWaypointName(const std::string &name)
 /**
  * Rename a waypoint.
  * @param flags type of operation
- * @param tile unused
- * @param p1 id of waypoint
- * @param p2 unused
+ * @param waypoint_id id of waypoint
  * @param text the new name or an empty string when resetting to the default
  * @return the cost of this operation or an error
  */
-CommandCost CmdRenameWaypoint(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text)
+CommandCost CmdRenameWaypoint(DoCommandFlag flags, StationID waypoint_id, const std::string &text)
 {
-	Waypoint *wp = Waypoint::GetIfValid(p1);
+	Waypoint *wp = Waypoint::GetIfValid(waypoint_id);
 	if (wp == nullptr) return CMD_ERROR;
 
 	if (wp->owner != OWNER_NONE) {
diff --git a/src/waypoint_cmd.h b/src/waypoint_cmd.h
index 09f7ec5d3e..29855be2c8 100644
--- a/src/waypoint_cmd.h
+++ b/src/waypoint_cmd.h
@@ -11,11 +11,14 @@
 #define WAYPOINT_CMD_H
 
 #include "command_type.h"
+#include "station_type.h"
 
-CommandProc CmdBuildRailWaypoint;
-CommandProc CmdRemoveFromRailWaypoint;
-CommandProc CmdBuildBuoy;
-CommandProc CmdRenameWaypoint;
+enum StationClassID : byte;
+
+CommandCost CmdBuildRailWaypoint(DoCommandFlag flags, TileIndex start_tile, Axis axis, byte width, byte height, StationClassID spec_class, byte spec_index, StationID station_to_join, bool adjacent);
+CommandCost CmdRemoveFromRailWaypoint(DoCommandFlag flags, TileIndex start, TileIndex end, bool keep_rail);
+CommandCost CmdBuildBuoy(DoCommandFlag flags, TileIndex tile);
+CommandCost CmdRenameWaypoint(DoCommandFlag flags, StationID waypoint_id, const std::string &text);
 
 DEF_CMD_TRAIT(CMD_BUILD_RAIL_WAYPOINT,       CmdBuildRailWaypoint,      0,        CMDT_LANDSCAPE_CONSTRUCTION)
 DEF_CMD_TRAIT(CMD_REMOVE_FROM_RAIL_WAYPOINT, CmdRemoveFromRailWaypoint, 0,        CMDT_LANDSCAPE_CONSTRUCTION)
diff --git a/src/waypoint_gui.cpp b/src/waypoint_gui.cpp
index 673601f89f..4fca572242 100644
--- a/src/waypoint_gui.cpp
+++ b/src/waypoint_gui.cpp
@@ -139,7 +139,7 @@ public:
 	{
 		if (str == nullptr) return;
 
-		Command<CMD_RENAME_WAYPOINT>::Post(STR_ERROR_CAN_T_CHANGE_WAYPOINT_NAME, 0, this->window_number, 0, str);
+		Command<CMD_RENAME_WAYPOINT>::Post(STR_ERROR_CAN_T_CHANGE_WAYPOINT_NAME, this->window_number, str);
 	}
 
 };