Meeting Federal Safety Requirements for CNG School Buses

Compressed natural gas (CNG) is a cost-effective alternative fuel for school buses as long as technicians follow the appropriate safety regulations. Federal standards outline how to inspect and maintain these fuel systems so that they prevent accidents that could harm students, drivers, and maintenance personnel.

Key Federal Safety Standards for CNG School Buses

1. ANSI NGV 6.1

The American National Standards Institute (ANSI) NGV 6.1 outlines safety and performance requirements for CNG vehicle fuel systems. Fleet managers must confirm:

• Proper installation and inspection of CNG fuel components.

• The installation of functional pressure relief devices (PRDs).

• Appropriate leak detection and system integrity tests.

2. NFPA 52

National Fire Protection Association 52 establishes safety standards for CNG fueling, storage, and vehicle maintenance. Fleet managers must ensure:

• Proper installation and maintenance of CNG fuel systems.
• Regular fuel system inspections to detect and prevent fuel leaks.
• Training for technicians on emergency response protocols.

2. FMVSS 304

U.S. DOT enforces Federal Motor Vehicle Safety Standards (FMVSS) 304, which provides a breakdown of the safety requirements for all motor vehicles. When it comes to CNG-powered school buses, technicians must ensure:

• Proper labeling and handling of CNG components.
• High-pressure fuel system integrity.

Fleet managers must also be aware of these regulations to reinforce the appropriate vehicle checks.

Best Practices for Meeting CNG Safety Requirements

• Conduct routine fuel system inspections and preventive maintenance to detect safety risks early.
• Ensure drivers and technicians receive proper CNG safety training.
• Stay informed about updates to federal and state regulations.
• Encourage technicians to obtain CNG fuel system inspector certification.

How AFVi Supports CNG School Bus Safety

AFVi provides industry-leading CNG training programs to help school bus fleet managers meet state and federal safety requirements. Our training solutions equip teams with essential knowledge to ensure safe bus operations, prevent accidents and reduce liability, and enhance fleet operations.

Would you like to learn more about our training? Contact us today to learn what courses are available.