What is the maximum LP-gas capacity of cylinders that may be transported in a closed-bodied passenger vehicle, unless the driver's and engine compartments are separated from the cargo space by a vapor-tight partition?

The maximum LP-gas capacity of cylinders that may be transported in a closed-bodied passenger vehicle is 90 pounds. This restriction is put in place for safety reasons. When transporting LP-gas in a passenger vehicle, it is essential to ensure that there is minimal risk of gas exposure to the driver and passengers. If the driver's and engine compartments are not separated from the cargo space by a vapor-tight partition, this limitation helps prevent the buildup of flammable vapors in the passenger compartment in case of a leak.

Transporting more than this weight limit could increase the risk of dangerous conditions in the event of a leak or an accident. The specific weight of 90 pounds strikes a balance between allowing reasonable use of LP-gas while maintaining safety protocols. Understanding these limitations is crucial for compliance with the NFPA 58 code and ensuring safe handling of liquefied petroleum gas.