CDL General Knowledge Practice Test page 10

61. You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first?

a. Stay off the brake until the vehicle has slowed down.
b. Quickly steer onto the shoulder.
c. Begin light braking.
d. Begin emergency braking.


62. Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?

a. Heavy vehicles need larger gaps in traffic than cars.
b. The best way to cross traffic is to pull the vehicle partway across the road and block one lane while waiting for the other to clear.
c. The heavier your load, the smaller the gap needed to cross traffic.
d. Because heavy vehicles are easy to see, you can count on other drivers to move out of your way or slow down for you.


63. Which of these statements about staying alert to drive is true?

a. A half hour break for coffee will do more to keep you alert than a half hour nap.
b. There are drugs that can overcome being tired.
c. If you must stop to take a nap, it should be at a truck stop or other rest area - never on the side of the road.
d. Sleep is the only thing that can overcome fatigue.


64. Which of these is a good thing to remember about using mirrors?

a. You should look at a mirror for several seconds at a time.
b. Convex mirrors make things look larger and closer than they really are.
c. There are "blind spots" that your mirror cannot show you.
d. You should check your mirrors twice for a lane change.


65. You are checking your steering and exhaust system in a pre-trip inspection. Which of these problems if found should be fixed before the vehicle is driven?

a. Steering wheel play of more than 10 degrees (2 inches on a 20-inch steering wheel).
b. Leaks in an exhaust system.
c. A small leak of power steering fluid.
d. All of the above.


66. Your vehicle has hydraulic brakes. While traveling on a level road you press the brake pedal and find that it goes to the floor. Which of these statements is true?

a. You should not downshift if you have an automatic transmission.
b. Pumping the brake pedal may bring the pressure up so you can stop the vehicle.
c. The parking break will not work either because it is part of the same hydraulic system.
d. All of the above are true.


67, Brake "fade":

a. can be caused by the brakes getting very hot.
b. can be corrected by letting up on the brakes for 1-2 seconds and then reapplying them.
c. is a problem that only occurs with drum brakes.
d. All of the above.


Answers: (61)a   (62)a   (63)d   (64)c   (65)d   (66)b   (67)a

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