CDL Hazmat Test 2025 Questions Answers:

The power unit of placarded vehicles must have a fire extinguisher with an
Underwriters Laboratories (UL) rating of 10 B:C or more.

Always check local route restrictions before starting a trip

The 3 things you need to know to decide which placards are needed are:
material’s hazard class, amount being shipped, and amount of all hazardous
materials of all classes.

The floor lining for Division 1.1, 1.2, or 1.3 explosives should be non-
metallic or non-ferrous metal. Non-ferrous metals are metals that do not contain
iron or iron alloys.

When carrying Division 1.1, 1.2, or 1.3 materials, do not park within 300
feet of a bridge, tunnel, or building; place where people get together; or an open
fire.

Cyanides and acids cannot be loaded into the same vehicle.

A safe haven is a approved place for parking unattended vehicles loaded
with explosives.

Any vehicle that requires placarding requires you to stop at railroad
highway crossings.

The transport index tells the degree of control needed during
transportation. The total transport index of all packages in a single vehicle must
not exceed 50.

Unless your engine runs a pump for product transfer, turn it off when
loading or unloading. If you use the engine, turn it off after product transfer and
before you unhook the hose.

Class 1 (Explosives), Class 2.1 (Flammable Gas), Class 3 (Flammable
Liquids) should not be loaded into a trailer that has a heater/air conditioner.

Shippers package in order to contain the risk

Flammable solids are solids that react (including fire and explosion) to
water, heat, and air or even react spontaneously.

Never continue driving with hazardous materials leaking in order to find a
phone booth, truck stop, help, or similar reason. The carrier pays for the cleanup
of contaminated areas and the costs are enormous.

Regulations require that hazardous materials employees be trained and
tested at least once every 3 years.

Class 7 (Radioactive) materials require a “transport index”. The transport
index tells the degree of control needed during transportation. The total transport
index of all packages in a single vehicle must not exceed 50.

Placards are used to communicate risk.

A hazardous materials ID number number must appear on the shipping
paper and on the package. It must also appear on cargo tanks and other bulk
packaging.

ou must be at least 5 feet away from the traveled part of the road when
parking a vehicle carrying Division 1.2 or 1.3 materials.

You must check your tires at the beginning of a trip and each time the
vehicle is parked.

Bulk packaging permanently attached to a vehicle is known as a cargo
tank. Portable tanks are bulk packaging which are not permanently attached to a
vehicle.

Shipping papers must be kept in a pouch on the driver’s door; clear view
within immediate reach while the seat belt is fastened while driving; driver’s seat
when out of the vehicle