Which load requires a chlorine-service gas mask to be carried in the vehicle?
Correct answer: C – Chlorine transported in a cargo tank motor vehicle
Federal rules require a chlorine cargo tank motor vehicle to carry a gas mask approved for chlorine service. It must also have an emergency kit for controlling leaks in fittings on the dome cover plate. The Michigan CDL manual includes both items in its chlorine-equipment guidance.
Source: Michigan Commercial Driver’s License Manual — § 9.6.11, “Equipment for Chlorine”, 49 CFR § 177.840(e) – Class 2 (Gases) Materials

