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The tanker endorsement applies to drivers who wish to drive a tank in Class A, B, or C CDL. To add this endorsement to your CLP/CDL, you must pass a knowledge test on the problems posed by large volume liquid cargos. The Illinois CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The IL tanker test covers the following sections of the Illinois CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this IL tanker practice test now to prepare for the actual test!
1. Which of the following is not a sign of fatigue?
Rubbing eyes
Frequent blinking
Yawning repeatedly
Keeping a steady speed
2. The amount of liquid to load into a tank depends on:
the weight of the liquid.
the amount the liquid will expand in transit.
legal weight limits.
All of the above.
3. The parking brake:
should be used when you need to apply the brakes firmly.
should be used whenever you park.
should be used when driving in bad weather.
All of the above.
4. If a tank is leaking, you should:
get the leak fixed immediately.
flash your brake lights to warn other motorists.
call your dispatcher or supervisor for instructions.
continue the trip until you can pull into a service station.
5. If your brakes fail while you are driving on a downgrade, you should:
immediately start looking outside your vehicle for something to stop it.
use an escape ramp if it's available.
take the least hazardous escape route you can.
All of the above.
6. Do not smoke within ______ of a placarded cargo tank used for flammable liquids (Class 3) or gases (Division 2.1).
25 feet
100 feet
5 feet
50 feet
7. When driving a tanker, liquid surge:
is never dangerous.
should not  be a concern.
can have bad effects on handling.
results from movement of the liquid in full tanks.
8. Front-end header boards:
should never be used.
protect drivers from spilled cargo.
reduce traction.
protect drivers from cargo in case of an accident or emergency stop.
9. A placarded vehicle must have at least ___ identical placards.
1
4
3
2
10. If the ABS is not working:
the truck will still have normal brakes.
you should immediately reduce your speed.
the truck will have no brakes.
All of the above.
 
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Frequently Asked Questions

To obtain a class D driver's license in Illinois, teens must follow the three steps of the Graduated Driver License (GDL) system. Here are the age requirements:

  • For a learner's permit, you must be at least 15.
  • For an initial license, you must be between 16-17.
  • For a full license, you must be between 18-20.

For applicants between 18 and 20 years old, a six-hour adult driver education course is required before getting a driver’s license.

Visit the Illinois Secretary of State’s office website to book your written test. You can choose dates and times based on your preferences and the available options at various Illinois DMV locations. 

You must present the following documents:

  • Proof of written signature (credit cards, mortgage documents, passport, etc).
  • Proof of date of birth with your full name.
  • Proof of Social Security Number.
  • Proof of residency (e.g., bank statement, insurance policy, or utility bill). For a REAL ID-compliant driver’s license, you have to bring two proofs.

Use this checklist to prepare for your visit and ensure you have all the necessary documents.

The DMV written test in Illinois is available in English. If you don't speak English well or experience any reading difficulties, you can request an oral examination in person at any Secretary of State driver’s license office.

The DMV written test is based on the Illinois Driver's Manual. Focus on road signs, safe driving practices and road rules. Take our free practice tests to prepare for the permit test, or sign up for DMV Premium to unlock more resources and prepare for your exam faster!

The Illinois DMV written test consists of 35 questions. Among them, 15 focus on traffic sign identification, and the remaining 20 are multiple-choice or true-false questions. These questions are based on the official manual, so it's important to study it well to maximize your chances of passing the exam.

Illinois imposes specific restrictions on new drivers according to their age.

Permit phase:
  • Driving is prohibited from 10 p.m. to 6 a.m. (Saturday-Thursday) and from 11 p.m. to 6 a.m. (Friday-Saturday).
  • The maximum number of passengers is one in the front seat, and the number of passengers in the back seat is limited to the available safety belts.
  • Drivers and passengers must wear safety belts.
  • Using a cell phone, including a hands-free device, is prohibited (except for emergencies).

Initial licensing phase:
  • Driving is prohibited from 10 p.m. to 6 a.m. (Saturday-Thursday) and from 11 p.m. to 6 a.m. (Friday-Saturday).
  • Drivers and passengers must wear safety belts.
  • During the first 12 months or until the driver turns 18, only one passenger under the age of 20 is allowed (except for family members). After this period, only one person is allowed in the front seat, and the number of passengers in the back seat is limited to the available safety belts.
  • Using a cell phone, including a hands-free device, is prohibited (except for emergencies).

Full licensing phase:
  • Drivers under 18 cannot operate for-hire vehicles transporting property or require a commercial driver’s license, and until 21, they are not allowed to use any for-hire vehicles transporting people.
  • Using a cell phone, including a hands-free device, is forbidden for drivers under 19 (except for emergencies).
If you are under 18, the learner’s permit is valid for two years, with a requirement to hold it for a minimum of nine months before qualifying for a driver's license. For applicants over 18,  the permit is valid for one year. If it expires, a renewal fee is applicable. 


If you fail the DMV written test, you can take a second attempt on the same day. However, if you fail because you were caught cheating, you will have to wait 30 days before retaking it. Generally, you have three attempts to pass the permit test within one year after the application.

IL CDL Tanker Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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