Double Triple Test | Illinois 2026 #2

Train for FREE with our Illinois CDL double triple 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 CDL double triple 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 may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . If you see lights ahead while driving in fog:

You can assume the lights are on the road.

It may be a reflection.

It may be an optical illusion.

The lights may not indicate where the road is as the vehicle may have pulled off the roadway.

When driving under foggy conditions, lights cannot be taken as a reliable indication of where the road is. The lights may be coming from a vehicle that has pulled off the road.

2 . 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.

3 . Why should rental trucks be approached with caution?

It is a rental vehicle, so it likely isn’t insured.

Drivers are usually worried about their cargo.

Drivers may not be familiar with the limited views to the sides and rear.

They do not respond to the driver as well as other vehicles.

You should be cautious when driving near rental trucks because the people driving them may not be used to operating vehicles with limited views to the sides and rear. Drivers who cannot see others on the roadway are hazardous.

4 . Without oil in its engine:

A vehicle will likely run smoothly.

A vehicle will make quick jerks while driving.

A vehicle's engine may be damaged quickly.

A vehicle's gas mileage will improve.

An engine can be rapidly destroyed if it is run without oil. If its oil pressure gauge is low or fluctuating, do not operate a vehicle.

5 . If colors are being used to distinguish glad hands, which color is used for service lines?

Orange

Yellow

Green

Blue

When trailer air lines are color-coded, the service lines are generally blue and the emergency lines are generally red.

6 . When inspecting the engine compartment, you should not:

Check the engine oil level.

Check the coolant level in the radiator.

Drain the brake fluid.

Check the windshield washer fluid level.

When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things.

7 . Brake fade is a result of:

Exposure to sunlight.

Exposure to moisture.

Excessive use.

Not using the brakes enough.

If brakes are used too much, they will overheat and become less effective. This is referred to as brake fade.

Study tip:

Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet”

99.2% of people who use the cheat sheet pass the FIRST TIME

Click Here
Full Cheat Sheet

99.2%

99.2% of people who use the cheat sheet pass the FIRST TIME

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.