When does hazmat driver need to have a gas mask on hand?

A hazmat driver needs to have a gas mask on hand when transporting hazardous materials that could release toxic fumes or vapors in the event of a spill or accident. The gas mask is essential for protecting the driver from inhaling harmful substances, particularly if the cargo is classified as toxic, corrosive, or flammable. Additionally, having a gas mask is crucial during emergency response situations where exposure to hazardous air contaminants may occur. Compliance with regulations and safety protocols also mandates the availability of proper personal protective equipment, including gas masks, for such drivers.