Combination Vehicles Practice Test | Alabama 2026 #1

Train for FREE online with our Alabama 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 AL 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 . When coupling, after you've connected the air lines to the trailer, you should:

Supply air to the trailer.

Activate the emergency brake.

Disconnect the glad hands.

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.

2 . To prevent a rollover, a driver should:

Keep cargo low.

Place cargo high.

Keep cargo loose.

Turn quickly.

Rollovers can happen when a combination vehicle is turned too quickly. To help prevent the risk of rollover, it is important to keep the vehicle's center of gravity low by loading cargo as close to the ground as possible.

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 . When braking with ABS, you should:

Push the brake pedal harder than usual.

Push the brake pedal as you normally would.

Push the brake pedal more lightly than usual.

When operating a vehicle with an Anti-Lock Braking System (ABS), you should apply your brakes in the same manner as you would if operating a vehicle without ABS.

5 . When uncoupling a trailer, landing gear should be:

Raised completely.

Lowered halfway.

Just off the pavement.

Firmly on the ground.

Landing gear, or trailer supports, should always be completely raised before a vehicle is driven. When uncoupling, landing gear should be lowered to make firm contact with the ground. If a trailer is loaded when it is being uncoupled, you should lower the landing gear and turn the crank a few additional times to remove some weight from the trailer.

6 . Look into the back of the fifth wheel:

While testing your air brakes.

If your vehicle begins to skid.

When inspecting a coupling.

While inspecting a coupling, you should go under the trailer and look into the back of the fifth wheel. Ensure that the fifth wheel jaws are secured around the shank of the kingpin.

7 . If your trailer goes off course while you are backing, you should:

Continue the backing process without changing anything.

Pull the truck forward, readjust, and start backing again.

Get out of the truck and move the trailer into the right position.

Turn the steering wheel all the way to the left until the trailer straightens out.

If your trailer goes off course while you are backing, you should pull your truck forward and reposition your vehicle as needed before continuing to back up.

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2026 Alabama | Frequently Asked Questions

To secure a CDL Bus endorsement in Alabama, you must first have a valid Commercial Driver's License (CDL). Then, you need to pass the Passenger Vehicles endorsement written test. After passing the written test, you will need to complete a skills test in the type of vehicle you plan to drive. The Alabama Law Enforcement Agency (ALEA) administers these tests.

To obtain a CDL Bus license in Alabama, you must have a valid driver's license, pass a medical examination, and complete a CDL application. You need to pass the General Knowledge test, the Passenger Endorsement written test, and the School Bus Endorsement written test if applicable. Finally, you need to successfully complete a skills test in an appropriate vehicle.

While Alabama doesn't mandate specific training for a CDL Bus endorsement, it's beneficial to undergo professional training to learn about bus-specific regulations, safety considerations, and operation. Experience is not required, but you must pass the General Knowledge Test, Passenger Endorsement Test, and a skills test in a vehicle similar to the one you'll be driving.

CDL Bus licenses in Alabama fall into three classifications: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 lbs., where the vehicle being towed is over 10,000 lbs. Class B is for single vehicles over 26,001 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 in Alabama. The vehicle used for the test must match the type and class of vehicle that matches the CDL license you are seeking. For a bus endorsement, you need to test in a bus of the appropriate size and type.

During the CDL Bus driving test in Alabama, your driving skills will be evaluated. These include pre-trip inspection, basic vehicle control, and on-road driving. You may be asked to perform maneuvers such as parallel parking, backing up, making turns, and navigating intersections. Your ability to handle bus-specific operations like loading/unloading passengers, use of emergency exits, and understanding special traffic rules for buses will also be tested.

Yes, to obtain a CDL Bus endorsement in Alabama, applicants must pass a Department of Transportation (DOT) physical examination. This exam ensures drivers have no medical conditions that could affect their ability to operate a commercial vehicle safely. It includes vision and hearing tests, blood pressure checks, and assessments for conditions like diabetes or heart disease.

No, it's illegal to transport passengers in Alabama without a valid CDL Bus endorsement. This endorsement is required for drivers who operate a vehicle designed to transport 16 or more passengers, including the driver. Failure to have the appropriate endorsement can result in fines, license suspension, or even jail time.

You can add the CDL Bus endorsement to your existing CDL in Alabama. You don't need a new application. However, you must pass the Passenger Transport test and a skills test in a vehicle similar to the one you'll be driving. After passing these tests, the endorsement can be added to your license.

Yes, there are restrictions. Drivers with a CDL Bus endorsement must adhere to federal and state transportation laws, including hours-of-service rules, which limit the number of hours they can drive without rest. They must also pass regular physical examinations to ensure they're fit to drive and maintain a clean driving record. Violations can result in endorsement suspension or revocation.