Texas Compressed Natural Gas (CNG) Delivery Truck Driver Practice Exam

Fuel supply cylinders should not rely on outlet or service valves for support because these components are not designed to bear weight or structural loads. Their primary function is to control the flow of gas from the cylinder and ensure safety during the dispensing and operation processes. Relying on valves for support could lead to valve failure, gas leaks, or even catastrophic accidents if the cylinder were to shift or fall. In contrast, proper mounting brackets, vehicle frames, and cylinder brackets are specifically designed to secure and stabilize the fuel supply cylinders during transport. They provide the necessary structural integrity and safety needed to keep the cylinders in place and minimize the risk of movement or damage. This distinction underscores the importance of using appropriate mechanical supports to ensure safety and reliability in CNG vehicle operations.