Devices for Boarding and Alighting Vehicles.

Emergency Exits for Buses.

Fire Extinguishers for Buses.

First Aid Equipment for Motor Vehicles.

Aisles and Arrangement of Passenger Seats in Buses.

Wheel Covers and Spare Wheels.

Reverse Gear.

Compressed Gas Systems and Pressure Vessels.

Towing Coupling for Vehicles.

Trailer Support Devices for Semi-trailers and Trailer Supports.