Which authority outlines the requirements for CNG transport unit registration?

The Texas Department of Transportation (TxDOT) is the authority responsible for establishing the requirements for the registration of CNG transport units within Texas. TxDOT oversees transportation regulations at the state level, including those that pertain specifically to the transportation of compressed natural gas. This includes the registration process, which ensures that all vehicles used for CNG transport comply with state safety standards and regulations.

While the Federal Motor Carrier Safety Administration (FMCSA) does regulate interstate transportation and has requirements that may impact CNG transport on a broader scale, the specific registration of transport units is managed by state authorities like TxDOT in Texas. The Environmental Protection Agency (EPA) focuses more on regulations concerning emissions and environmental impact rather than specific vehicle registration aspects. The National Transportation Safety Board (NTSB), on the other hand, mainly investigates transportation accidents and does not set requirements pertaining to vehicle registration or operation. Therefore, TxDOT is the most relevant authority for CNG transport unit registration in Texas.