CDL PRACTICE TEST - GENERAL KNOWLEDGE (NORTH DAKOTA)

21. HAZMAT placards are:
optional signs
speed signs
warning signs
regulatory signs
22. Drivers should watch out for black ice when the temperature is ______ freezing and the road looks ______.
above; dry
above; wet
below; wet
below; dry
23. Hydroplaning:
never occurs at speeds below 40 mph.
only occurs at extremely high speeds.
only happens when tire pressure is higher than normal.
can occur at speeds as low as 30 mph.
24. ABS:
makes it easier to turn.
allows the wheels to lock up.
helps you avoid wheel lock up.
makes it easier to break.
25. Loose cargo:
can be a danger to others and yourself.
could fall off your vehicle and cause traffic problems.
could hurt or kill you during a quick stop.
All of the above.
26. When a combination vehicle goes around a corner:
the rear wheels of the trailer will never off-track.
the front and rear wheels follow a different path.
the driver must keep the rear of your vehicle far away from the curb.
All of the above.
27. What is the most important hand signal you should agree on with a helper?
Stop
Turn right
Keep backing
Go forward
28. With brake drums, if brakes become too hot:
the brakes will supply too much power to the drive wheels.
the air compressor will kick on to cool the brakes.
The brakes may stop working
your ABS will malfunction.
29. To check the signal lights, do the following:
Turn off all the lights, turn on the right turn signal lights, and turn on the stop lights.
Turn on all the lights, turn off the stop lights, and turn off the left turn signal lights.
Turn off all the lights, turn on the stop lights, and turn on the left turn signal lights.
Turn on the stop lights, turn on all the lights, and turn on the right turn signal lights.
30. You are inspecting your vehicle during a trip. What should you do?
Use your senses to check for problems.
Check critical items such as tires, brakes, and lights.
Watch gauges for signs of trouble.
All of the above.
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