OR CDL DOUBLES TRIPLES PRACTICE TEST
11.
Which of the following is a good way to avoid becoming an aggressive driver?
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Avoid talking on your cell phone.
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Be realistic about your travel time.
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Keep your following distance reasonable.
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All of the above.
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12.
When coupling, you should:
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make sure the trailer wheels are not chocked.
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make sure the sliding fifth-wheel is locked.
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make sure the trailer kingpin is bent.
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be aware that wrong coupling and uncoupling can be very dangerous.
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13.
As you approach off ramps and on ramps, remember:
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that the posted speed limit may be safe for automobiles, but may not be safe for larger vehicles.
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to slow down before you get on the curved part of an off ramp or on ramp.
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that braking and turning at the same time can be a dangerous.
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All of the above.
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14.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
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50 psi
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100 psi
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75 psi
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25 psi
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15.
Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
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50 psi
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100 psi
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10 psi
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75 psi
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16.
If you hear a loud loud "bang" and the steering feels "heavy", you should:
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check your rearview mirrors to see if you have a flat tire.
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pump the brakes until the vehicle has slowed down.
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brake hard and pull off the road.
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hold the steering wheel firmly and stay off the brake.
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17.
A low air pressure warning signal:
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is required on vehicles with air brakes.
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is optional on vehicles with air brakes.
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is required on all vehicles without air brakes.
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None of the above.
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18.
Foundation brakes are used:
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only with the rear wheels.
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only with the right wheels.
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only with the front wheels.
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at each wheel.
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19.
For safety during a trip, you should:
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check critical items when you stop.
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watch gauges for signs of trouble.
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use your senses to check for problems.
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All of the above.
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20.
Hydroplaning:
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can occur only if there is a lot of water on the road.
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can occur at speeds as low as 10 mph, if there is a lot of water.
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is less likely if tire pressure is low.
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can occur at speeds as low as 30 mph.
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