Combination #1
Combination Vehicles Practice Test | Montana 2025 #1
Train for FREE online with our Montana 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 MT 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.
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1 . During a trip, the ____ should be open.
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 . Before beginning a trip, you should:
Before a trip, you should ensure that air reaches all air brakes on all trailers by opening up the rear emergency line and service line shut-off valves and listening for escaping air. Close both shut-off valves before beginning to drive.
3 . Push in the trailer air supply control to:
Supply the trailer with air.
Push in the trailer air supply control to supply the trailer with air. Pull out the trailer air supply control to turn off the air supply and activate the emergency brakes.
4 . Trailers with low underneath clearance can present challenges when driving over:
Railroad-highway crossings may be difficult to cross when pulling a trailer with a low underneath clearance. In particular, both low-slung units and single-axle tractors pulling long trailers are especially challenging to drive over raised crossings.
5 . Combination vehicles need extra space on the road because they:
Combination vehicles need more space on the road than other commercial vehicles because they are longer and need more space to turn and stop. It is especially important to properly manage space when you are operating a combination vehicle.
6 . To find out if a vehicle that was built before 1998 has an Anti-Lock Braking System (ABS), you can:
If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can check under the trailer for wheel speed sensors coming from the back of the brakes.
7 . Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:
Older trailers do not have spring brakes. This means that if the air supply in an older trailer's air tank has leaked away, there will be no working brakes connected to the trailer and its wheels will turn freely.
2025 Montana | Frequently Asked Questions
In Montana, to secure a CDL Doubles/Triples endorsement, you must first hold a valid Commercial Driver's License (CDL). Then, you need to pass the Doubles/Triples Knowledge written test. After passing the test, pay the necessary fees at your local Montana Motor Vehicle Division office to have the endorsement added to your CDL.
To obtain a CDL Doubles/Triples endorsement, you must hold a valid Commercial Driver's License (CDL). You will then need to pass the Doubles/Triples Knowledge written test. Some states may require additional training or experience. Check with your local Department of Motor Vehicles for specific requirements in your state.
While you must have a valid Commercial Driver's License (CDL) to get a Doubles/Triples endorsement, Montana doesn't explicitly require specialized training or experience. However, it's recommended to undergo training for safety and proficiency. Keep in mind, you must pass the Doubles/Triples Knowledge Test to get the endorsement.
Yes, in Montana, to obtain a CDL Doubles/Triples endorsement, you are required to pass a specialized knowledge test. This test is designed to assess your understanding of safety protocols, operational procedures, and regulations associated with driving double and triple trailers. It's separate from the general CDL written exam.
The CDL Doubles/Triples endorsement test in Montana is a written knowledge test, not a skills test. It focuses on specific rules and safety guidelines related to hauling double and triple trailers. Topics include coupling and uncoupling, inspecting doubles and triples, and handling these large vehicles on the road. Practical skills or maneuvers are not directly tested for this endorsement.
No, it is not permissible. In Montana, as in all U.S. states, you must have a valid CDL with a Doubles/Triples endorsement to legally operate double or triple trailers. Driving such vehicles without the appropriate license and endorsement can result in hefty fines, license suspension, and potential legal consequences.
Yes, you can add the Doubles/Triples endorsement to your current CDL. You don't need to initiate a new license application. However, you will need to pass the Doubles/Triples endorsement knowledge test, and pay an additional fee. Once you pass, the endorsement will be added to your existing CDL.
Yes, there are limitations. A CDL Doubles/Triples endorsement allows you to operate vehicles with more than one trailer, but it doesn't permit you to drive all types of commercial vehicles. For instance, you would need additional endorsements to drive a school bus or a vehicle carrying hazardous materials. Furthermore, all CDL rules regarding medical fitness, hours of service, etc., still apply.
In Montana, the maximum weight for a vehicle (or combination) with a load is 131,060 pounds. The maximum length for a single trailer is 53 feet, and for double/triple trailers, the combined length should not exceed 75 feet. However, these limits can be subject to exceptions based on specific routes or permit conditions. Always check local regulations.
Yes, there are specific safety guidelines. Drivers must ensure the coupling devices are secure, maintain a safe following distance, and avoid sudden lane changes or hard braking. Also, they must be aware of the "crack-the-whip" effect, which can cause the last trailer to overturn at high speeds or sharp turns. Regular vehicle inspections and adhering to federal and state regulations are also required.