2024 Cargo Tank Vehicle Driver Facts PDF

Q. Why should the driver of a cargo tank vehicle keep the brakes applied during a normal traffic stop? A. Stopping the vehicle causes the liquid cargo to move back and forth in the tank. If the driver releases the brakes, the movement of the liquid may be sufficient to cause the v...

Q. Why should the driver of a cargo tank vehicle keep the brakes applied during a normal traffic stop? A. Stopping the vehicle causes the liquid cargo to move back and forth in the tank. If the driver releases the brakes, the movement of the liquid may be sufficient to cause the vehicle to roll back and forth and strike a vehicle behind or in front of the truck. When does liquid surge present the greatest problem ina cargo tank vehicle? A cargo tank ts particularly vulnerable to liquid surge when the cargo tank is only partially full. What are the hazard classes designated by the HMRs? To ensure that U.S. HM Regulations are consistent with the HM regulations applicable to international transportation, PHMSA has phased-in the use of these Class and Division numbers: Name Class Numbered Class/Dtv. Explosives 1.1 1.1 Explosives 1.2 1.2 Explosives 1.3 1.3 Explosives 1.4 1.4 Explosives 1.5 1.5 Explosives 1.6 1.6 Flammable Gas 2.1 Non-flammable Gas 2.2 Poison Gas 2.3 Plammable Liquid 3.0 Flammable Solid 4.1 Spontaneously Combustible 4.2 Dangerous When Wet 4.3 Onxidizer 5.1 Organic Peroxide 5.2 Poisonous Material 6.1 Etiologic Agents/Infectious Substances 6.2 Radioactive Material 7 Corrosive Material 8 Miscellaneous HM 9 oF