HAZMAT CDL PRACTICE TEST - DISTRICT OF COLUMBIA

21. Class 2 hazardous materials include:
Flammable gases
Corrosive materials
Radioactive materials
Poison
22. On front tires, tread should be at least:
4/16 inch
4/32 inch
2/32 inch
1/16 inch
23. Strong winds can make it difficult to stay in your lane, especially when:
driving alongside other vehicles.
driving at speeds below 40 mph.
going into tunnels.
coming out of tunnels.
24. Placards are used:
to protect the accident area.
to warn other drivers about the risks of tailgating.
to warn other drivers when the load on the vehicle extends 4 feet or more beyond the rear of the body.
to warn others of hazardous materials.
25. How many reflective triangles/emergency reflectors should you carry?
1
4
3
2
26. If HazMat is spilling from your vehicle while you are driving, you should:
continue driving in order to find a phone booth.
not move your vehicle any more than safety requires.
get out of the vehicle and try to identify the source of the leak by smell.
continue driving in order to find a truck stop.
27. Carriers must give each driver transporting Class A or B explosives:
a silver placard.
a copy of FMCSR, Part 397.
an inspection certificate.
None of the above.
28. Before each trip, you must make sure:
the cargo has a high center of gravity.
the truck is overloaded.
your cargo obscures your view to the sides.
the cargo is balanced and secured.
29. Which of the following is NOT a reason for hydraulic brake failure?
Loss of hydraulic pressure
Stab braking
Brake fade on long hills
All of the above.
30. When driving in very hot weather, you may have to:
reduce your speed to prevent overheating.
increase your speed until the tires cool off.
watch out for black ice.
decrease your following distance.
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