SD CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST

11. When an aggressive driver confronts you, you should:
avoid eye contact.
return gestures and shouts.
make eye contact.
sound your horn and move to the left lane.
12. Which of these can cause your vehicle to skid?
Over steering
Over acceleration
Braking any harder than necessary on slippery roads
All of the above.
13. When is it safe to remove the radiator cap?
Whenever coolant has to be added to the system.
As soon as you've stopped, as long as the engine is not hot.
When you can touch the radiator cap with your bare hand.
It is always safe.
14. If you become drowsy while driving, you should:
take a break.
drink plenty of coffee.
open the windows to get some fresh air.
try to fight it.
15. When transporting a load, the cargo should be inspected:
only after driving.
after every break you take during your trip.
by your supervisor.
by a helper.
16. Drivers should use their horn when needed, however they must be aware that using the horn:
is prohibited on interstate highways.
can startle other drivers.
damages your hearing.
consumes the battery.
17. Skids caused by acceleration can usually be stopped by:
swerving to the left.
swerving to the right.
applying the brakes firmly.
taking your foot off the accelerator.
18. The best way to recognize that your trailer has started to skid is:
by opening the window and feeling the front of the mirror.
by recognizing tire failure.
by feeling the brakes come on.
by seeing it in your mirrors.
19. Which of the following is NOT true?
ABS only comes into play when a wheel would have locked up because of over braking.
ABS will change the way you normally brake.
ABS won't compensate for bad brakes.
ABS won't compensate for poor brake maintenance.
20. When you leave your vehicle you should:
leave the key in the ignition.
release the parking brake.
apply the service brake.
None of the above.
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