The CDL General Knowledge practice test covers topics such as the rules of having a CDL and driving a commercial vehicle safety. Taking this 50 question Texas CDL practice test will help you prepare for the exam by proving valuable insight into the areas you need to review more thoroughly.
1. According to the Commercial Driver’s manual, why should you limit the use of your vehicle’s horn?
2. Controlled braking is used when
3. Which of the following happens when a tire blows at highway speed?
4. When traveling down a long downgrade, you should always
5. Shifting gears properly is important because
6. “Over-the-counter” medication used to treat the common cold
7. Which of the following statements about backing a commercial vehicle to a dock is NOT true?
8. Bridge formulas are designed to
9. Which of the following statements about causes of vehicle fires is true?
10. When you are driving through construction zones, you should
11. Which of the following is true concerning cold weather driving?
12. Drinking alcohol can affect your
13. When backing your vehicle, you should
14. What is the purpose of a pre-trip inspection?
15. Which of the following should you NOT do?
16. When you are driving at night, you should
17. Most serious skids are a result of
18. Why do hazardous materials regulations exist?
19. What three factors add up to the total stopping distance for a commercial vehicle?
20. The Driver’s Manual says you should use your horn
21. While driving you are looking ahead of your vehicle. How should you be looking?
22. When fighting a fire, which is most correct?
23. Which of the following statements is true?
24. The proper way to load a vehicle is
25. If you are aren’t sure that you have safe space to pass under an object, you should
26. Which of the following is true about rear drive wheel braking skids?
28. Placarding, the use of hazardous material placards and labels, is an example of
29. When driving in fog, you should
30. Before entering a curve, you should
31. It you are being tailgated you should
33. Your vehicle is 40 feet long and you are traveling at 50 mph. The safe following distance is
34. If a state or federal inspector judges that your vehicle is unsafe, they will put the vehicle out of service
35. Which of the following is true?
36. Use of alcohol can cause serious driving errors, including
37. You are driving on a straight and level roadway at 60 mph and suddenly a tire blows out on your vehicle. What should you do first?
38. Convex (curved) mirrors will
39. How many missing or broken leaves in a leaf spring will cause your vehicle to be placed out-of-service?
40. Which of the following is true about the use of reflective emergency triangles?
41. The braking effect of the engine is greatest when
42. Which of the following is a sign of drowsy driving
43. If you drive through heavy rain or standing water your brakes may get wet. What can this cause when you apply the brakes?
45. Water will extinguish which of the following fires?
46. Which of the following conditions may produce a skid?
47. If you break down on a level, straight, four-lane, divided highway, where should you place the reflective warning triangles?
48. Can federal inspectors inspect your truck or bus?
49. As alcohol begins to build up in the body, which of the following is affected first?
50. When you see a hazard in the road in front of you, you should