When may hazardous materials be transported on passenger-carrying vehicles?

Hazardous materials may be transported on passenger-carrying vehicles only if there is no other practical means of transportation because this ensures the safety of both the passengers and the general public. The regulations regarding the transportation of hazardous materials are designed to minimize risk, and using passenger vehicles for such transport should be a last resort.

The reasoning behind this approach includes considerations such as the potential hazards posed to passengers, the risk of leaks or accidents, and the specific safety requirements that might not be met by passenger vehicles. Only when there are no feasible alternatives may this type of transportation be considered acceptable, thus prioritizing safety and compliance with regulations.

Options that suggest transporting hazardous materials under different conditions may fail to account for the stringent safety protocols necessary in such situations. For instance, having the vehicle well-marked or ensuring the driver is trained does not address the fundamental risks associated with combining hazardous materials and passenger transport. Therefore, a clear guideline is established—transporting hazardous materials on passenger vehicles is a measure of last resort.