Tank Endorsement Test | Illinois 2026 #1

Train for FREE with our Illinois tank endorsement practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IL tank license in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . What is the symbol for a marine pollutant?

The image of a waves in a yellow triangle with an X through through the waves

The image of a fish in a white triangle with an X through through the fish

A light blue square with a dark blue X through the square

The image of a bird in a red octagon

The marine pollutant marking is the image of a fish in a white triangle with an X through through the fish.

2 . Wheel rims that have been welded should:

Be placed in the front of the vehicle.

Be placed in the rear of the vehicle.

Be placed on dual tires.

Not be used.

Wheels and rims with welding repairs are not safe to be used. Replace any damaged wheels and rims.

3 . Before entering a curve, you should:

Upshift.

Speed up.

Drive on the shoulder.

Downshift.

Always downshift before entering a curve. Decreasing your speed before entering the curve will allow you to maintain better control over the vehicle throughout the curve.

4 . Which of the following is not a potential effect of drinking alcohol then driving?

Improved reaction time

Driving too fast

Driving in the incorrect lane

Weaving while driving

Driving errors that may be caused by alcohol-induced impairment include straddling lanes; quick, jerky starts; failure to signal or use lights; running stop signs and red lights; and improper passing. A driver's reaction time will become poor when they are under the influence of alcohol.

5 . Distracted driving:

Is not a concern.

Only happens when drivers are physically doing something, like using a cell phone.

Can occur due to mental activities, such as daydreaming.

Is encouraged on uncrowded roads.

Mental distractions can be just as dangerous as physical ones. It is possible for a person to look right at a hazard on the road but fail to notice it because their thoughts are occupied by something else.

6 . The trailer hand valve should be used:

Regularly to activate the trailer brakes in all driving conditions.

Only to test the trailer brakes.

Only in inclement weather when the trailer may skid.

Only if the trailer is carrying a load.

The trailer hand valve should be used only to test the trailer brakes. It should not be used while driving because it may cause the trailer to skid.

7 . Escape ramps are:

Ramps to exit the interstate quickly.

Ramps connecting four-lane highways and two-lane highways.

Ramps that can be used by stop runaway vehicles on steep downhills.

Ramps that cannot be used by automobiles.

Escape ramps are constructed in areas with steep downgrades to allow a means of safely stopping runaway vehicles. They consist of a long bed of loose, soft material, and sometimes an uphill slope.

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2026 Illinois | Frequently Asked Questions

To secure a CDL Bus endorsement in Illinois, you must first possess a Commercial Driver's License (CDL). Then, pass a passenger endorsement test which covers topics like bus inspection, loading/unloading passengers, and emergency procedures. Additionally, you may need to pass a skills test in the type of bus you wish to drive.

To obtain a CDL Bus license in Illinois, you must be at least 21 years old, have a valid Illinois driver's license, and pass a vision test. You will need to pass both a written and skills test for the Commercial Driver's License (CDL). For the bus endorsement, you must pass the Passenger Vehicles written test and perform a driving test.

Yes, specific training is necessary for a CDL Bus endorsement. You need to pass a written passenger endorsement test and a skills test in the type of bus you wish to drive. Some individuals may require additional training depending on their experience level, including hands-on driving practice and understanding safety regulations.

CDL Bus licenses in Illinois fall into three classifications: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 lbs. where the towed vehicle is over 10,000 lbs. Class B is for single vehicles over 26,001 lbs. or towing another vehicle not over 10,000 lbs. Class C is for vehicles designed to transport 16 or more passengers including the driver.

No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle used for the test must match the type and class of CDL you're applying for. For a bus endorsement, you must take the test in the type of bus you plan to drive. This ensures you can handle and operate that specific vehicle safely.

During the CDL Bus driving test, you are evaluated on specific skills like pre-trip vehicle inspection, basic vehicle control, and on-road driving. These may include maneuvers like backing up, parallel parking, making turns, and highway driving. You will also be evaluated on your ability to handle bus-specific situations like loading and unloading passengers safely.

Yes, there are additional medical prerequisites for a CDL Bus endorsement. You must pass a Department of Transportation (DOT) physical examination every two years. The exam evaluates your vision, hearing, blood pressure, and checks for diabetes and other potential health issues. You'll also need to self-certify your medical status with the Illinois Secretary of State's office.

No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Illinois. This is a legal requirement, and driving a commercial passenger vehicle without the appropriate endorsement can result in significant fines, license suspension, and even jail time. It ensures the driver has the necessary skills and knowledge for passenger safety.

Yes, the CDL Bus endorsement can be added to your existing CDL in Illinois. You don't need to apply for a new CDL. However, you must pass the Passenger Transport Test and a skills test in the type of vehicle you'll be driving. Additionally, a background check is required for school bus drivers.

Yes, there are restrictions for drivers with a CDL Bus endorsement in Illinois. These include a zero-tolerance policy for alcohol and drugs, mandatory regular medical examinations to ensure fitness to drive, and adherence to hours-of-service regulations to prevent fatigue. Additionally, drivers must always wear seat belts and obey speed limits. Violations can lead to fines, license suspension, or revocation.