Where should the diamond-shaped label be placed on each on-road general purpose vehicle powered by LP-gas?

The diamond-shaped label is required to be placed on the lower right rear or trunk lid of each on-road general-purpose vehicle powered by LP-gas to ensure compliance with safety regulations outlined in NFPA 58. This location is strategic as it makes the label visible to emergency responders and other drivers, signaling that the vehicle operates on liquefied petroleum gas. Proper placement enhances safety by allowing for quick identification of the fuel type, which is crucial in emergencies or when responding to incidents involving the vehicle. Proper marking contributes to hazard communication and helps in preventing accidents related to the handling of LP-gas.