Environmental Specification for Petrol and Diesel Fuels Regulations 2003 (Air Pollution Act 1987).

Diesel Engine Emissions - M1 and N1 Vehicles - Installation and Homologation of Systems.

Engine Emissions from Wheeled Agricultural and Forestry Tractors - Reference EC Directive 2000/25/EC and its Subsequent Amendments.

Promotion of Clean and Energy-efficient Road Transport Vehicles.

Maximum Speed, Torque and Engine Power of Two and Three Wheel Vehicles - Reference EC Directive 93/92/EEC Amended by 2002/41/EC.

Vehicle Emissions - Reference EC Directive 70/220/EEC Amended by 2002/80/EC.

Wheeled Agricultural and Forestry Tractor Approval - Reference Various EC Directives.

Diesel Engines Emissions - M1 and N1 Vehicles - Replacement Catalytic Converters.

Speed/Torque/Power, Brakes and Statutory Marks of Two and Three Wheel Vehicles - Reference EC Directives 97/24/EC, 93/14/EEC and 93/34/EEC Amended by 2006/27/EC.

Vehicle Emissions - Reference EC Directive 70/220/EEC Amended by 98/77/EC.