// RoadTypes, with ability to get road type, tram type, or look up roadtype given subtype
enum RoadTypes {
	ROADTYPES_ROAD_BASE = 0,
	ROADTYPES_ROAD_LENGTH = 4,    ///< Number of bit
	ROADTYPES_INVALID_ROAD = 0x7, ///< Road-type denoting 'no road'.

	ROADTYPES_TRAM_BASE = 4,      ///< Start bit of the tram types.
	ROADTYPES_TRAM_LENGTH = 4,    ///< Number of bits for the tram types.
	ROADTYPES_INVALID_TRAM = 0x7, ///< Tram-type denoting 'no tram'.
};