def get_english_display_name(self):
        english_vehicle_type_display_names = {
            VehicleCategory.PROFESSIONAL_DRIVER: "professional driver",
            VehicleCategory.PRIVATE_DRIVER: "private driver",
            VehicleCategory.LIGHT_ELECTRIC: "light electric vehicles",
            VehicleCategory.CAR: "private car",
            VehicleCategory.LARGE: "large vehicle",
            VehicleCategory.MOTORCYCLE: "motorcycle",
            VehicleCategory.BICYCLE_AND_SMALL_MOTOR: "bicycle and small motor vehicles",
            VehicleCategory.OTHER: "other vehicle",
        }
        try:
            return english_vehicle_type_display_names[self]
        except (KeyError, TypeError):
            logging.exception(f"VehicleType.get_display_name: {self}: no display string defined")
            return "no display name defined"