Permissible Sound Level and Exhaust System of Motor Vehicles.
Components and Characteristics of Two or Three Wheel Vehicles - Reference EC Directive 97/24/EC.
Approval of Certain Equipment for Agricultural and Forestry Tractors.
Driver Perceived Noise - Agricultural Tractors - Reference EC Directive 2006/26/EC.
Highway Code Regulations - Regulamento do Codigo da Estrada (Extracts).
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