Combination Vehicles Practice Test | Michigan 2025 #2

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 2025, 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 . 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.

2 . A driver should test the tractor protection valve by:

Pulling the yellow, diamond-shaped knob.

Releasing air with the brake pedal.

Unlocking the trailer doors.

You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.

3 . 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.

4 . Rollovers happen when:

You drive too slowly.

You are stopped.

You take a turn too fast.

Rollovers are caused by operators turning too fast. To avoid rolling over, drive slowly on entrance ramps, on exit ramps, and around corners. Avoid making quick lane changes when towing trailers.

5 . Place the trailer air supply control in its "emergency" position to test:

The trailer emergency brakes.

A coupling device.

The anti-lock brakes.

Be sure to test the trailer emergency brakes before beginning a trip. After ensuring that the trailer rolls freely, you can test the emergency brakes by pulling out the trailer air supply control, or placing it in the "emergency" position. Pull forward slightly with the tractor and make sure the trailer does not move.

6 . If you press the tractor air supply control and your trailer's spring brakes do not release, you should:

Inspect the air line connections.

Activate the Anti-Lock Braking System.

Turn the engine off and on again.

It is important that all of a vehicle's equipment is in proper working condition before beginning a trip. If a trailer's spring brakes do not release when you push in the tractor air supply control, you should make sure the air line connections are properly attached and sealed.

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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2025 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.