illinois
CDL Practice Test

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Welcome to the Illinois CDL Practice Test site. This is a free site and you are able to take the tests as a study guide as you prepare for the Illinois CDL test. The topics covered in these practice tests are taken from the Illinois CDL book. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin. 

1 / 40

Select the part that is not a part of the drum brake:

2 / 40

Why is understanding the loading and unloading procedures so critical?

3 / 40

Which of the following should you do when confronted by an aggressive driver?

4 / 40

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

5 / 40

A driver that hauls hazardous materials must attend training every:

6 / 40

In the slide mechanism of the sliding fifth wheel, this object should have no missing pins or be loose when fully engaged.

7 / 40

You are inspecting the_____when looking for broken welds, cracks, holes, or other damage to the longitudinal frame member, cross members, box, and floor.

8 / 40

What can side to side surge cause?

9 / 40

It is good practice to_____when uncoupling.

10 / 40

How should the trailer be lined up when preparing to back the tractor up?

11 / 40

How often should you check your cargo?

12 / 40

Which of these statements about speed management and braking is true?

13 / 40

Start by___when coupling.

14 / 40

How do you check the air flow to the last trailer?

15 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

16 / 40

Select how you would check the truck's slack adjusters.

17 / 40

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

18 / 40

You should check the_____when loading small tanks equipped with bulkheads.

19 / 40

The most stable tanker shape is:

20 / 40

In column 1, the "D" symbol means:

21 / 40

Forward and back surge is powerful in this type of tanker.

22 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 Dangerous When Wet material?

23 / 40

If your bus is equipped with an emergency exit door, it must:

24 / 40

What does the air compressor governor control?

25 / 40

The cause of almost half of all truck driver deaths are:

26 / 40

There must not be more than_____for engine compartment belts.

27 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

28 / 40

How often should you check the cargo you are transporting?

29 / 40

Select the true statement:

30 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

31 / 40

Select the statement that is not part of the air-brake system:

32 / 40

Select the true statement:

33 / 40

With Division 1.1, 1.2, or 1.3 Class A or B, how close can you park to a bridge, tunnel, or building?

34 / 40

Wet brakes can cause _____.

35 / 40

Which of the following statements is FALSE?

36 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

37 / 40

When is it acceptable for non-hazardous materials to be described by hazard class words or identification numbers?

38 / 40

When is it best to wear your seat belt?

39 / 40

How do you secure a second trailer to your combination vehicle?

40 / 40

You must not allow riders to stand:

Your score is

The average score is 60%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get An illinois Commercial Drivers License

Applicants can apply for their CDL and any endorsements they wish at the age of 21 years old. Those under the age of 21, but over the age of 18 are eligible to receive an in-state only CDL. Those under 21 are not eligible for driving hazmat vehicles or transporting passengers. All applicants must supply a Department of Transportation (DOT) medical certificate and pass the CDL vision test in order to be qualified to receive their CDL. All applicants are required to pass a vision test, knowledge test(s), and a practical skills assessment in order to be considered for a CDL license.

Any applicant that is described by any of the sentences below is considered disqualified from getting their CDL.

  • A driver that has their commercial driving privileges revoked in another state.
  • Any driver convicted of driving impaired in a commercial vehicle in the past 24 months.
  • A driver that possess more than one driver’s license.
  • Any driver whose license is currently denied, canceled, suspended, or revoked.

Endorsements
L – Air Brake Restriction
X – Combination
P – Passenger
C – Charter Bus
T – Doubles/Triples
H – Hazardous Materials
S – School Bus
N – Tank

Hit the Open Road

illinois CDL License Test Tips

The written exam or knowledge test is required of all CDL applicants. This exam is comprised of 50 specific questions about commercial driving. Those applying for endorsements must complete an additional knowledge test for that endorsement. These tests are between 20 and 30 questions. Those who are applying for a Class A CDL must complete an additional 20 questions about combination vehicles. All knowledge tests must be passed with a grade of 80 percent or more for an applicant to receive their CDL permit.

The Illinois CDL skills assessment must be completed by an applicant. Each assessment includes a pre-trip inspection, basic control skills, and on-road driving test. The on-road driving test includes real-life driving instances, such as low clearance bridges, downgrading for a stop, increasing gears, curves, expressways, and other instances. These are mean to ensure the applicant is fully capable of driving a commercial vehicle safely.

Additional Information

Information on the Office of the Illinois Secretary of State

The Office of the Illinois Secretary of State is responsible for the administration of the CDL requirements and testing in Illinois. To get more information contact them via:

Website:  https://www.cyberdriveillinois.com/departments/drivers/drivers_license/CDL/cdl.html

Phone:  800.252.8980

 

Additional Illinois CDL Helpful Links

Please use the links below to access more valuable Illinois CDL testing resources and to learn more about practice driving tests for the state of Illinois.