Combination #1
Combination Vehicles Practice Test | Michigan 2026 #1 Page 3 of 3
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.
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15 . The "crack-the-whip" effect can:
Trailers can overturn as a result of the "crack-the-whip" effect. The last trailer in a combination is the most prone to tip over due to this effect. Drivers should be aware of the rearward amplification of their specific vehicles and drive accordingly.
16 . Rollovers happen when:
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.
17 . Place the trailer air supply control in its "emergency" position to test:
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.
18 . The best way to recognize that your trailer has started to skid is by:
The easiest way to become aware that your trailer has begun to jackknife is to observe it in your mirrors. Checking your trailer in your mirrors will also allow you to spot any skidding at the earliest possible moment.
19 . Before a trip, you can make sure air flows to all trailers by:
Before a trip, ensure that air in the air brake system reaches all trailers. Do this by waiting for air pressure to build, then sending air to both the emergency and service lines and opening the shut-off valves on the rear of the last trailer. If air escapes from the shut-off valves in the rear of the combination, the air is being supplied to the entire vehicle.
20 . Watching the road ahead:
Making a sudden lane change can be dangerous while driving a combination vehicle. You can avoid the need to make a sudden lange change by looking down the road for upcoming obstacles that will require you to change lanes.
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2026 Michigan | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Michigan, you must already possess a Commercial Driver's License (CDL). Complete a written knowledge test at the Secretary of State office. After passing the test, the endorsement will be added to your CDL. Remember, it's necessary to have a 'T' endorsement to pull double or triple trailers.
To obtain a CDL Doubles/Triples endorsement, you must: 1) Already hold a Commercial Driver's License (CDL), 2) Pass a written knowledge test about the specific skills and knowledge required for driving double and triple trailers, 3) Pay the necessary fees. Once you pass the test, the 'T' endorsement will be added to your CDL.
While specialized experience or training is not a mandatory requirement for a CDL Doubles/Triples endorsement, it is highly recommended. The endorsement test covers specific knowledge about handling double and triple trailers. Therefore, practical experience or training can be beneficial in successfully passing the test and safely operating such vehicles on the road.
Yes, to obtain a CDL Doubles/Triples endorsement, you are required to pass a written knowledge test. This test includes questions about coupling and uncoupling, inspecting doubles and triples, and rules for pulling these types of vehicles. After passing this test, the 'T' endorsement is added to your Commercial Driver's License (CDL).
The CDL Doubles/Triples endorsement test is a written exam, not a driving test, so no specific maneuvers are required. However, the test covers topics like coupling and uncoupling, inspecting doubles and triples, and rules for pulling these vehicles. Knowledge of these areas is essential to pass the test and safely operate such vehicles.
No, it is not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Michigan. Driving these types of vehicles requires specialized skills and knowledge, which are validated by obtaining the endorsement. Operating without the proper endorsement can lead to fines, penalties, and potential loss of your CDL.
You can add the CDL Doubles/Triples endorsement to your existing commercial driver's license in Michigan. You don't need to initiate a new application for a license. However, you must pass the required knowledge test for the endorsement and pay any applicable fees to add it to your current license.
Yes, there are limitations for drivers with a CDL Doubles/Triples endorsement. The most notable is that the endorsement only allows you to operate double or triple trailers. Additionally, all standard CDL rules and restrictions still apply, such as obeying traffic laws, maintaining a clean driving record, and passing regular medical examinations to ensure fitness for driving.
In Michigan, the maximum weight for a double/triple trailer is 164,000 pounds, depending on the number of axles and bridge length. The maximum length for a trailer is 53 feet. However, the combined length of a double/triple trailer cannot exceed 59 feet. Please note that these restrictions may vary based on local and federal regulations.
Yes, there are specific safety guidelines for driving double/triple trailers with a CDL Doubles/Triples endorsement. These include maintaining safe following distances, proper coupling and uncoupling of trailers, checking brake systems and lights, and managing high-speed and high-wind conditions. Drivers must also undergo regular drug and alcohol tests as per federal regulations.
