CDL TANKER TEST DISTRICT OF COLUMBIA - PRACTICE TEST

11. If you're feeling tired while driving you should:
increase your speed to get to your destination quicker.
drink coffee.
stop driving and get some rest.
eat something.
12. A shipping paper has an "X" placed before the shipping description in a column captioned "HM". This indicates:
Hazardous materials
An exception to the hazardous materials regulations
An high-mobility vehicle
Non-hazardous products
13. If the engine catches fire, you should:
turn off the engine as soon as you can.
open the hood as soon as you can.
avoid shooting foam from the vehicle's underside.
pull into a service station and notify the emergency services.
14. With a dual air brake system:
each system shares the same lines and hoses.
one system is the main braking system while the other is a back-up system.
each system shares air tanks.
each system has its own air tanks, hoses and lines.
15. If an aggressive driver confronts you, you should NOT:
make eye contact.
ignore gestures.
try to get out of their way.
try to let them pass.
16. Before entering a curve, you should:
reduce your speed.
increase your speed.
maintain your speed.
come to a complete stop.
17. Liquid surge results from movement of the liquid in partially filled tanks. Side-to-side surge can cause:
a rollover.
tire failure.
an automatic failure.
brake failure.
18. Overloading can have bad effects on all of the following except:
Braking
Steering
Exhaust system
Speed control
19. Baffled liquid tanks:
handle the same way as tankers without baffles.
help control side to side liquid surge.
make tank vehicles seem heavier than they really are.
help control the forward and backward liquid surge.
20. Black ice is:
a thick layer of ice.
a thin layer of black ice.
ice that makes the road look dry.
None of the above.
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