OK CDL PRACTICE TEST - GENERAL KNOWLEDGE

41. Which of the following is a key steering system part?
Tie rod
Anchor plate
Leaf spring
42. The Johnson bar is a valve that:
is installed in the first tank the air compressor pumps air to.
works the trailer brakes.
reduces the braking pressure to a safe level.
43. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
44. When checking the steering system during your pre-trip inspection you should look for:
mismatched lock rings.
cracked drums.
steering wheel play of more than 10 degrees.
45. Having ABS on only the trailer:
makes the trailer more likely to swing out.
is very dangerous.
still gives you more control over your vehicle during braking.
46. When should you use the 4-way emergency flashers instead of flashing the brake lights to warn the drivers behind you?
At night time.
When you are driving very slowly or are stopped.
When visibility is poor.
47. When approaching an emergency vehicle stopped on the side of the road with lights flashing, you should:
stay in the right lane.
move to the lane not next to that of the emergency vehicle.
speed up.
48. When going down a hill, you should downshift:
before you start going downhill.
after starting down a hill.
as you go downhill.
49. If your vehicle gets stuck on the railroad tracks, you should:
gather up your paperwork and shipping papers while calling 911, then get out of the vehicle.
check for identifiable landmarks to give the location of the crossing.
get out of your vehicle and away from the tracks.
50. What is the most important hand signal you should agree on with a helper?
Stop
Go forward
Keep backing
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