Noise Emissions - Vehicle Exhausts.

Noise Emissions - Newly-manufactured Motorcycles and Motorized Tricycles.

Vehicle Regulations.

Motorised Cycles and Engines - Test Marks.

Motorised Cycles Noise Levels.

Road Traffic Regulations 1976 (Extracts).

Vehicle Equipment.

Noise.

Technical Requirements for Road Vehicles.

Permissible Sound Level and Exhaust System of Motor Vehicles.