Combination Vehicles Practice Test | Michigan 2026 #1

Train for FREE online with our Michigan CDL combination vehicle test. 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 MI combination 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 combination license may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . During a trip, the ____ should be open.

Rear service line shut-off valve

Rear supply line shut-off valve

Inner shut-off valves

When starting a trip, be sure that all shut-off valves are in the open position, except for the last valves on the rear trailer. It is important that air reaches the brakes on all trailers and that it is not able to escape from the back of the vehicle.

2 . When testing ____, you should apply your vehicle's brakes with the hand control while moving the vehicle forward slowly.

The Anti-Lock Braking System

The emergency braking system

The trailer service brakes

To test the trailer service brakes, you should first ensure that the braking system has a normal air pressure level, then release the parking brake. You should then move the vehicle forward slowly and apply the brakes with the hand control. If the trailer service brakes are working properly, you will feel the brakes activate.

3 . The emergency air line supplies air to the:

Relay valves.

Trailer air tanks.

Signal line.

The emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks, and the second is to control the emergency brakes on combination vehicles.

4 . When backing up your tractor while coupling it to a trailer, the trailer brakes should be:

Deactivated.

Locked.

Unlocked.

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. Before backing your tractor under the trailer while coupling, make sure your trailer brakes are locked.

5 . If a trailer begins to jackknife, the driver:

Should not apply the trailer hand brake.

Should firmly apply the brakes.

Can straighten the trailer with the parking brake.

If a trailer begins to jackknife, you should release the brakes and allow the trailer wheels to regain traction with the road. Do not apply the trailer hand brake to attempt to straighten out the rig because the application of brakes is what caused the wheels to lock in the first place.

6 . If your vehicle gets stuck on railroad tracks, you should:

Sit in the cab and call for help.

Exit the cab and walk away from the tracks.

Motion for another driver to push your vehicle.

If your vehicle gets stuck on railroad tracks for any reason, you should immediately exit the vehicle and walk away from the tracks. Contact the proper emergency authorities.

7 . A trailer that is too high:

May not couple correctly.

Will couple securely.

Is not an issue.

Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.

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2026 Michigan | Frequently Asked Questions

In Michigan, to acquire a CDL Passenger endorsement, you must first have a Commercial Driver's License (CDL). Then, pass a written passenger endorsement test and a skills test in a passenger vehicle. The written test covers the information found in the Michigan CDL Manual's passenger transport section, and the skills test includes pre-trip inspection, basic controls, and on-road driving.

To obtain a CDL Passenger license in Michigan, you must be at least 18 years old for intrastate driving or 21 for interstate driving, have a valid Michigan driver's license, pass a Department of Transportation (DOT) physical examination, successfully complete a written general knowledge test and a passenger transport test, and demonstrate your skills through a three-part driving test.

While Michigan does not require specific training to secure a CDL Passenger endorsement, it's recommended to take a professional training course. Experience is not required, but you must pass a written passenger endorsement test and a skills test in a passenger vehicle. Studying the Michigan CDL Manual, particularly the passenger transport section, can help prepare for these tests.

Yes, to obtain a CDL Passenger endorsement in Michigan, you need to pass a written knowledge test specifically focused on passenger transport safety and operations. This is in addition to the general CDL written exam. The test covers topics like vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.

During the CDL Passenger endorsement skills test, you'll need to demonstrate your ability to inspect your vehicle, check safety equipment, operate the vehicle in various traffic conditions, and perform maneuvers such as turning, backing up, and parking. You'll also need to showcase your knowledge on loading/unloading passengers, responding to emergencies, and handling special situations like railroad crossings.

No, you cannot legally transport passengers in Michigan without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to drive a vehicle designed to carry 16 or more passengers, including the driver. Driving without the necessary endorsements could result in heavy fines, license suspension, or even criminal charges.

Yes, you can add the CDL Passenger endorsement to your existing commercial driver's license. You don't need a new license, but you will have to pass the Passenger endorsement written test and, in some cases, a skills test. Check with the Michigan Secretary of State's office for specific requirements and procedures.

Yes, there are specific limitations for drivers with a CDL Passenger endorsement in Michigan. These include prohibitions on texting and using handheld mobile phones while driving. Also, drivers must ensure the safety of all passengers, and for school bus drivers, there are additional restrictions such as obeying school zone speed limits and requirements for picking up and dropping off students.

Yes, there are age-related prerequisites for acquiring the CDL Passenger endorsement in Michigan. You must be at least 21 years old to drive a commercial vehicle across state lines (interstate) or to carry hazardous materials. However, if you're only driving within Michigan (intrastate), you can get a CDL at age 18.

With a CDL Passenger endorsement, you will be eligible to drive vehicles such as buses, shuttles, and vans that are designed to carry 16 or more people including the driver. This endorsement is necessary for school bus drivers, city bus drivers, and anyone else who operates large passenger vehicles for commercial purposes in Michigan.