FREE CDL Combination Vehicles Practice Test Online | Maine 2024
Train for FREE online with our Maine 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 ME combination license in 2021, 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 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:
In vehicles equipped with an automatic tractor protection valve, the valve will pop out if air pressure drops to a level between 20 and 45 psi. When the valve pops out, the protection valve will close, stopping the flow of air.
2 . After completing a pre-trip inspection, you should ensure that the:
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 . 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.
4 . The trailer hand valve should be used:
The trailer hand valve (also referred to as the "trolley valve" or "Johnson bar") works the trailer brakes and should be used only when testing them. Using the trailer hand valve while driving could result in a skid.
5 . Shut-off valves:
Shut-off valves are used in air supply lines to control the passage of air from one trailer to another. The rear shut-off valve should always be closed to prevent air from leaving the braking system.
6 . Keeping cargo centered on a rig can:
A rollover is more likely if cargo is unevenly loaded in a rig. To help prevent a dangerous rollover, it is important to keep a load as centered on the rig as possible.
7 . 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.
2024 Maine | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Maine, you must possess a valid Maine CDL. Then, pass the Doubles/Triples Knowledge test. This test covers the information found in the Maine Commercial Driver License Manual's section on Doubles/Triples. After passing the knowledge test, you'll receive your endorsement which allows you to drive vehicles with more than one trailer.
To obtain a CDL Doubles/Triples license, you must first have a Commercial Driver's License (CDL). Next, you need to pass the Doubles/Triples Knowledge Test, which covers handling, inspecting, and driving double/triple trailers. Study materials can be found in the CDL manual. After passing the test, the Doubles/Triples endorsement is added to your CDL.
While specialized experience or training isn't explicitly required for a CDL Doubles/Triples endorsement, it's beneficial to have a good understanding of handling and driving large vehicles. Studying the CDL manual, specifically the section on Doubles/Triples, is crucial. Passing the Doubles/Triples Knowledge Test is mandatory to receive the endorsement.
Yes, to obtain the CDL Doubles/Triples endorsement, you must pass the Doubles/Triples Knowledge Test. This test covers topics such as coupling and uncoupling, inspecting doubles and triples, and handling and driving double and triple trailers. The information required for this test can be found in your state's CDL manual.
The CDL Doubles/Triples endorsement test is a written knowledge test, not a skills test. Therefore, you won't need to showcase any specific maneuvers. However, you should have knowledge about coupling and uncoupling, inspecting doubles and triples, and the proper procedures for handling and driving double and triple trailers.
No, it is not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Maine. This endorsement is necessary to ensure that drivers have the knowledge and skills to safely operate these types of vehicles. Operating without the appropriate license or endorsement can result in fines and penalties.
You can add the CDL Doubles/Triples endorsement to your existing commercial driver's license. You don't need to initiate a new application for a different license. However, you will have to pass the Doubles/Triples knowledge test and pay an endorsement fee to add it to your current CDL.
Yes, there are limitations for drivers with a CDL Doubles/Triples endorsement. Drivers must adhere to the maximum allowable weight for double and triple trailers. They also cannot drive these trailers on all roads, as some are restricted. Additionally, drivers must follow all federal and state regulations regarding rest periods and hours of service.
In Maine, the maximum legal weight for a vehicle is 80,000 pounds. However, the exact weight for double/triple trailers can depend on axle spacing. As for length, the maximum limit is 75 feet for doubles and 100 feet for triples. These limits may vary depending on the type of roads or highways used. Always check local regulations before driving.
Yes, drivers with a CDL Doubles/Triples endorsement must follow specific safety regulations. They must ensure proper coupling and uncoupling of trailers, maintain safe following distances, and manage high-speed and curve handling. They're also required to perform routine vehicle inspections, secure cargo appropriately, and adhere to weight restrictions. Additionally, drivers must comply with all federal and state hours-of-service regulations.