521 						return_cmd_error(STR_1007_ALREADY_BUILT);

   521 						return_cmd_error(STR_1007_ALREADY_BUILT);

   522 					}

   522 					}

   523 				} break;

   523 				} break;

   524 

   524 

   525 				case ROAD_TILE_CROSSING:

   525 				case ROAD_TILE_CROSSING:

   527 					other_bits = GetCrossingRoadBits(tile);

   526 					other_bits = GetCrossingRoadBits(tile);

   528 					if (pieces & ComplementRoadBits(other_bits)) goto do_clear;

   527 					if (pieces & ComplementRoadBits(other_bits)) goto do_clear;

   529 					pieces = other_bits; // we need to pay for both roadbits

   528 					pieces = other_bits; // we need to pay for both roadbits

   530 					break;

   531 					break;

   531 

   532 

   532 				default:

   533 				default:

   533 				case ROAD_TILE_DEPOT:

   534 				case ROAD_TILE_DEPOT:

   534 					goto do_clear;

   535 					goto do_clear;

   576 			return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));

   577 			return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));

   577 		}

   578 		}

   578 

   579 

   579 		case MP_STATION: {

   580 		case MP_STATION: {

   580 			if (!IsDriveThroughStopTile(tile)) goto do_clear;

   581 			if (!IsDriveThroughStopTile(tile)) goto do_clear;

   582 

   582 

   583 			RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));

   583 			RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));

   584 			if (pieces & ~curbits) goto do_clear;

   584 			if (pieces & ~curbits) goto do_clear;

   585 			pieces = curbits; // we need to pay for both roadbits

   585 			pieces = curbits; // we need to pay for both roadbits

   586 		} break;

   588 		} break;

   587 

   589 

   588 		case MP_TUNNELBRIDGE:

   590 		case MP_TUNNELBRIDGE:

   589 			if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;

   591 			if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;

   590 			if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;

   592 			if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;