illinois
CDL Practice Test

3

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

It is important to know the outage required for the liquids you carry because:

2 / 40

When checking for_____you are looking for dripping fluids or puddles on the ground below the transmission or engine.

3 / 40

You should check your mirrors while making a lane change:

4 / 40

What is a passive railway crossing?

5 / 40

Which of the following statements about downshifting is NOT true?

6 / 40

You should follow behind other vehicles ______when traveling under 40 mph.

7 / 40

When transporting hazardous waste, you must:

8 / 40

You should be in the proper gear before going down a hill because:

9 / 40

This gauge has a governor cut-off.

10 / 40

Do empty trucks have the best braking?

11 / 40

What is the main difference between a portable tank and a cargo tank?

12 / 40

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

13 / 40

How do you check the connection after locking the kingpin into the fifth wheel?

14 / 40

What are the liquid tight separations between compartments inside tanks called?

15 / 40

Select the statement that is true in regards to managing space to the sides.

16 / 40

When approaching railroad tracks, stop your bus:

17 / 40

You must carry a gas mask with you when transporting:

18 / 40

Air tanks need to be drained:

19 / 40

It is very important that you never smoke around which hazard classes?

20 / 40

The locking jaws of the kingpin should close around:

21 / 40

What will occur as a result of failing to perform all 3 components of the air brake check?

22 / 40

A commercial motor vehicle (CMV) is defined as:

23 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

24 / 40

When should air tanks be drained?

25 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

26 / 40

Which of the following answers lists the three types of emergency equipment you must have on your bus?

27 / 40

What are you checking when looking at the lubrication level on a dipstick?

28 / 40

Why should you cover cargo?

29 / 40

You should never brake and should rely only steering inputs to avoid a crash while driving a tanker truck.

30 / 40

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

31 / 40

Why are you required to take an exam about air brakes?

32 / 40

A tractor should not be backed under a trailer until the whole air system is:

33 / 40

For any flatbed load you must have at least ____ tie downs.

34 / 40

Select the true statement about converter dollies:

35 / 40

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

36 / 40

How much space should there be between the lower and upper fifth wheel?

37 / 40

Select the first action to do when the low air pressure warning comes on:

38 / 40

Select the correct description for a bulkhead tank.

39 / 40

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

40 / 40

Your bus starts to lean toward the outside on a banked curve, you are:

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.