CDL PRACTICE TEST - GENERAL KNOWLEDGE (CALIFORNIA)

21. Serious traffic violations include:
erratic lane changes.
driving a CMV without obtaining a CDL.
All of the above.
22. Cargo should be properly covered:
to protect people from spilled cargo.
to protect the weather from the cargo.
to block your view or someone else’s.
23. ABS brakes help you:
lock up the wheels in an emergency stop.
downshift before starting down a hill.
avoid wheel lock up.
24. In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
ease into the other lane slowly so the other car can get out of the way.
assume the car left the roadway and change lanes as normal.
wait until you are sure the car isn't in your blind spot.
25. To correct a drive-wheel skid, you should NOT:
Countersteer.
Stop braking.
Steer into the skid.
26. When you are driving you should look at least ______ ahead.
20 to 30 seconds
12 to 15 seconds
5 to 10 seconds
27. What should you do to test your hydraulic brakes for leaks?
Pump the brake pedal three times, then apply pressure to the pedal and hold for five seconds.
Hold the brake pedal down for five seconds, then pump it three times.
Pump the brake pedal five times, then apply pressure for three seconds.
28. When driving a 60 foot truck at 35 mph in ideal conditions, you should keep at least _______ of space in front of you.
6 seconds
5 seconds
12 seconds
29. Which of the following is true about curved mirrors?
They are illegal in most States.
In a curved mirror things seem closer than they really are.
In a curved mirror everything appears smaller than it would if you were looking at it directly.
30. Excessive use of the service brakes results in overheating. Too much heat can:
make the brakes stop working.
cause the brakes apply unevenly.
cause the brakes to grab.
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