Final answer:
An operator is required to test a cargo tank motor vehicle equipped with an off-truck remote shutoff system during the initial inspection, as well as after any repairs or modifications are made to the system.
Step-by-step explanation:
An operator is required to test a cargo tank motor vehicle equipped with an off-truck remote shutoff system during the initial inspection, as well as after any repairs or modifications are made to the system. The purpose of this testing is to ensure that the shutoff system functions properly and can effectively shut off the flow of hazardous materials in case of an emergency.
For example, if a cargo tank motor vehicle is loaded with flammable liquid and is involved in an accident or experiences a leak, the off-truck remote shutoff system can be activated to stop the flow of the hazardous material, preventing further damage or danger.
This requirement is part of the Department of Transportation (DOT) regulations for the transportation of hazardous materials, specifically in relation to cargo tank motor vehicles. These regulations are in place to promote safety and prevent accidents or incidents during the transportation of dangerous substances.