illinois
CDL Practice Test

1

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

If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?

2 / 40

Which of the following is a clue another driver is impaired:

3 / 40

While driving on a clear night with low beam headlights, you should be able to stop within:

4 / 40

Select the true statement in regards to an application pressure gauge:

5 / 40

How can you check slack adjusters?

6 / 40

You must be alert for road hazards so that:

7 / 40

The _____of the kingpin has the locking jaw close around it.

8 / 40

Select the true statement about stop valves in a cargo tank:

9 / 40

How should the pintle hook be when backing a dolly under the second trailer?

10 / 40

You should line up_____when getting ready to back under the trailer.

11 / 40

Where is compressed air stored?

12 / 40

Which of the following will confirm that you are driving with anti-lock brakes?

13 / 40

Select the statement that best describes what the service line is for.

14 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

15 / 40

Select the true statement about dual air brake systems.

16 / 40

Select the true statement in regards to a converter dolly:

17 / 40

This object should be clean with no obstructions, illegal stickers or damage to the glass.

18 / 40

Why should you use chocks when parking a trailer without spring brakes?

19 / 40

When transporting hazardous loads, you must check the tires at least:

20 / 40

Do empty trucks have the best braking?

21 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

22 / 40

What position should the heaviest trailer be in when pulling 3 trailers?

23 / 40

If you have riders on board, you must never refuel:

24 / 40

To test the security of the tractor semi trailer connection you should:

25 / 40

You should____when an emergency requires you to quickly stop due to a crash.

26 / 40

A tank vehicle:

27 / 40

Select the true statement in regards to handing triples and doubles

28 / 40

If you are hauling hazardous materials and have ___ tires on your vehicle, you must stop and check them every time you park.

29 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

30 / 40

The bolst, brackets, or bushings that attach the air bag and/or spring to the vehicle and axle frame are _____.

31 / 40

Suspension systems:

32 / 40

Select the two reasons as to why special care is needed when driving a tank vehicle:

33 / 40

The two main things to look ahead for while driving are _____.

34 / 40

The blind spot behind the bus could extend to how many feet?

35 / 40

Select the answer that is controlled by the foot brake.

36 / 40

____is what can legally hold the parking brake or emergency brake in position for a bus, truck, or truck tractor.

37 / 40

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

38 / 40

What must vehicles with air brakes have?

39 / 40

What is the normal operating range for a truck's oil pressure?

40 / 40

Air brake systems should not lose air faster than____when testing for air leakage rates in combination vehicles before applying the brake pedal.

Your score is

The average score is 47%

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.