Standard 303: Fuel System Integrity of Compressed Natural Gas Vehicles

Scope and Purpose:
This standard specifies requirements for the integrity of motor vehicle fuel systems using compressed natural gas (CNG), including the CNG fuel systems of bi-fuel, dedicated, and dual fuel CNG vehicles. The purpose of this standard is to reduce deaths and injuries occurring from fires that result from fuel leakage during and after motor vehicle crashes.

Application:
Passenger cars, multipurpose passenger vehicles, trucks, and buses that have a GVWR of 4,536 kg (10,000 lb) or less and use compressed natural gas as a motor fuel, and school buses regardless of weight that use compressed natural gas as a motor fuel