How many chock blocks must each CNG transport carry as a minimum?

In the context of CNG transport, the requirement for chock blocks is crucial for ensuring the safety and stability of the vehicle, especially when it is parked on grades or uneven surfaces. The minimum requirement of two chock blocks is established to effectively secure the vehicle and prevent any unintended movement. Having two chock blocks allows for placement on both the front and rear tires on one side of the vehicle. This arrangement helps to provide adequate support and stability, reducing the risk of rolling or shifting, which can lead to accidents or equipment damage.

This requirement aligns with safety regulations that aim to enhance the operational safety of vehicles handling compressed natural gas. The use of chock blocks is a common practice in various transportation sectors, and specifically in the context of CNG transport, it is emphasized to prevent potential hazards associated with the gas-carrying vehicles.