CNG emission related Govt notification – May 2021:
Various amendments were introduced in the Month of May to the Central Motor Vehicle Rules, 1989 The Ministry of Road Transport and Highways notified amendments to the Central Motor Vehicles Rules, 1989 under the Motor Vehicles Act, 1988. The Act provides standards for motor vehicles, grant of driving licenses, and penalties for violation of these provisions.
With regard to emission the amended Rules specify standards for emission by certain vehicles using Compressed Natural Gas (CNG), bioCNG and Liquified Natural Gas. These vehicles include agriculture tractors, power tillers, construction equipment vehicles, and combine harvesters.
Under the Rules, the vehicles must be approved after testing of emissions and engine performance, and obtain a fitness certificate.
The relevant clause is Rule 115AB. Mass emission standards for CNG, Bio-CNG, LNG driven agriculture tractors, power tillers, construction equipment vehicles and combine harvesters.
The copy of the Gazette Notification is attached/ “115AB. Mass emission standards for CNG, Bio-CNG, LNG driven vehicles,
for fiurther reading – https://prsindia.org/policy/