20Excessive air impurities—Act, s 154

20 Excessive air impurities—Act, s 154

20 Excessive air impurities—Act, s 154

(1) This section applies to a motor vehicle, other than a heavy vehicle, propelled by—

(a) an engine (a spark ignition engine) designed—

(i) to operate using petrol, liquefied petroleum gas or compressed natural gas as a fuel, and

(ii) to have the fuel mixed with air and ignited by an electrical spark, or

(b) a diesel engine.

(2) For the Act, section 154(2)(a), the standard of concentration prescribed for a motor vehicle is the amount of air impurities emitted by the vehicle that results in the air impurities being visible for a continuous period of 10 seconds.

(3) For the Act, section 154(2)(b), the prescribed manner of testing the motor vehicle is testing the motor vehicle—

(a) when it is in operation, and

(b) in accordance with the test method specified in the Approved Methods (Sampling and Analysis) Publication as the observation procedure for excessive air impurities—visible emissions, TM-31.