CDL General Knowledge Test

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1. While driving, ice builds up on your wipers and they no longer clean the windshield. You should:
2. If your vehicle catches fire while you are driving, you should:
3. 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:
4. 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?
5. Which of the following is NOT a characteristic of the fron tire failure?
6. Bake fade:
7. Which of these is not required knowledge of driver needed a hazardous material endorsement?
8. The center of gravity of a load:
9. What happens to tar on the road pavement during hot weather?
10. Which of these is true about tires and hot weather?
11. The road you are driving on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation?
12. The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
13. You are driving a long vehicle that makes wide turns. You want to turn left from Elm Street onto Poplar Street. Both are two-lane two-way streets. You should:
14. When driving in cold weather your tire tread should:
15. Perception distance is the distance your vehicle travels from the time:
16. Which of these pieces of emergency equipment should always be carried in your vehicle?
17. Which of these statements about backing a heavy vehicle is true?
18. Which of the statements about pre-trip inspection is true?
19. A key principle to remember about loading cargo is to keep the load:
20. Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?
21. Which of the statements is true about rear drive wheel braking skid?
22. You should lightly apply your brakes to flash the brake lights if:
23. The driver's manual suggests several things to do, when you pass a vehicle. Which of these is NOT one of them?
24. Which of these is not a brake check you normally do during your walk-around inspection?
25. Which of these items is NOT checked for a pre-trip inspection?
26. Can state inspectors inspect your truck or bus?
27. Whenever you double your speed your vehicle has about how many times of destructive power if it crashes?
28. Which of these is correct about emergency or evasive action?
29. Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?
30. Which of these you should NOT do in an emergency situation?
31. During the vehicle inspection checking of ______ will NOT prevent a fire?
32. Why is a damage to the exhaust system a danger?
33. The primary cause of fatal crashes is:
34. When you are parked at the side of the road at night you must:
35. In case of which fires can you use water to put it out?
36. Which vehicle will have the most difficulties staying in its lane during a strong wind?
37. What is the most important reason to inspect your truck or bus?
38. High beams should be:
39. Which of these lights cannot be checked at the same time?
40. To avoid an accident you moved to the shoulder. To return to the road:
41. Brake drums (or discs) must not have cracks longer than _____ the width of the friction area.
42. Communication means:
43. Which of these statements about overhead clearance is true?
44. Most skids:
45. Which of these would not help if your windshield is covered with ice?
46. Which of these statements is true about using engine brake?
47. When you are driving on a snow packed road, you should reduce your speed by:
48. When approaching a bridge on a two lane road you should:
49. Which of these is a good thing to do when steering to avoid a crash?
50. When does a helper needs to be used to back your vehicle?


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