CDL General
Knowledge Test

6

This is the Commercial Vehicle Driver's License Test covering General Knowledge.  You will be presented with 40 questions and you must answer 34 questions correctly to pass.  There is no time limit.  You may not go back once you answer a question.  Click the "Start Test" button below to begin.  Good luck!

1 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

2 / 40

To transport cargo safely, which of these are you NOT responsible for?

3 / 40

Which of the following statements about downshifting is NOT true?

4 / 40

In the event of a tire failure you should...

5 / 40

How should you know when to shift?

6 / 40

Wet brakes can cause _____.

7 / 40

Which of the following statements about downshifting is NOT true?

8 / 40

What is the correct number of red reflective triangles that you should carry?

9 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

10 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

11 / 40

The minimum tread depth for tires other than the front tires is ____.

12 / 40

Which of the following is NOT a basic step to be taken at a crash scene?

13 / 40

When backing your vehicle, which of the following is NOT recommended

14 / 40

Which of the following is NOT an appropriate reason to flash your braking lights?

15 / 40

If you are traveling at 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?

16 / 40

Do empty trucks have the best braking?

17 / 40

Why should you cover cargo?

18 / 40

What are some of the important parts in the steering system?

19 / 40

Which of the following is NOT an important reason to look far ahead when you are driving?

20 / 40

You are driving a 60 foot truck at 55 MPH, how much space (in seconds) should you keep in front of you?

21 / 40

When stopped on a divided highway where should your reflectors be placed?

22 / 40

What action should you take before driving while drowsy?

23 / 40

Signs of distracted drivers include:

24 / 40

How can you determine if your vehicle is equipped with ABS?

25 / 40

The average person requires how many hours of sleep per 24 hour period?

26 / 40

What is the reason that placards are used?

27 / 40

Two causes of tire fires are ______.

28 / 40

The manual says you should look _____ ahead while driving.

29 / 40

What is the first thing to do if your vehicle catches fire while driving?

30 / 40

In the event of an accident you should remember to do the following EXCEPT:

31 / 40

Vehicle handling can become unsafe if the weight is not properly balanced. Hard steering can be caused by:

32 / 40

Suspension systems:

33 / 40

If you do become sleepy while driving, you should _____.

34 / 40

If you are drowsy, you should _____ before you drive.

35 / 40

Which contains more alcohol: a 12-ounce glass of 5% beer, a 5-ounce glass of 12% wine or a 1 1/2-ounce shot of 80 proof liquor?

36 / 40

When using turn signals, which of the following should be avoided?

37 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

38 / 40

When accelerating:

39 / 40

Always try to back toward the driver's side because

40 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

Your score is

The average score is 73%

4.6/5 - (9 votes)

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