Combination #1
Combination Vehicles Practice Test | Maine 2026 #1 Page 3 of 3
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 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 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.
16 . A trolley valve:
The trailer hand valve (also referred to as the trolley valve or Johnson bar) is a mechanism that works the trailer brakes. It should only be used to test the brakes. Using it while the vehicle is being driven could cause a skid. Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place.
17 . 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.
18 . 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.
19 . 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.
20 . When backing up your tractor while coupling it to a trailer, the trailer brakes should be:
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.
See the exact questions that will be on the 2026 Maine DMV exam.
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2026 Maine | Frequently Asked Questions
To acquire a CDH Hazmat endorsement in Maine, you first need a valid Maine CDL. Then, complete a background check and fingerprinting through the Transportation Security Administration (TSA). After this, pass the Hazmat Knowledge Test at your local Bureau of Motor Vehicles (BMV). Lastly, submit your passed test results, TSA approval, and pay the necessary fees to the BMV.
To obtain a CDL Hazmat license, you must first have a valid Commercial Driver's License (CDL). You also need to be at least 21 years old. A background check and fingerprinting through the Transportation Security Administration (TSA) is required. Lastly, you must pass the Hazardous Materials Endorsement Knowledge Test.
When applying for a CDL Hazmat endorsement in Maine, you'll need your current valid CDL, proof of U.S. citizenship or lawful permanent residency (such as a birth certificate, passport, or green card), and proof of Maine residency. You'll also need to provide your Social Security number. Finally, you must complete the TSA's fingerprint-based background check and security threat assessment.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test, known as the Hazardous Materials Endorsement Knowledge Test, assesses your understanding of the rules and regulations related to transporting hazardous materials. It covers topics like loading and unloading hazardous materials, bulk packaging, and emergency response procedures.
The CDL Hazmat endorsement written test covers a variety of subjects related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, using placards and labels, loading and unloading procedures, handling emergencies, and following safety rules and regulations. The goal is to ensure safe and responsible handling of hazardous materials.
Yes, there are additional costs associated with obtaining a CDL Hazmat endorsement. Fees include the application fee, fingerprinting fee, and background check fee. The exact costs can vary, so it's recommended to check with the Maine Bureau of Motor Vehicles or the TSA for the most current fees. Remember, these are in addition to any testing or licensing fees for your CDL.
Yes, a background check and security clearance are mandatory for a CDL Hazmat endorsement. The Transportation Security Administration (TSA) conducts a security threat assessment including fingerprinting. This process checks for any criminal, immigration, or security issues that might disqualify an applicant. The aim is to ensure the safety and security of hazardous materials transportation.
Yes, specialized training and certification are required for the CDL Hazmat endorsement. Applicants must pass the Hazardous Materials Endorsement Knowledge Test, which covers regulations and practices for transporting hazardous materials. Additionally, they must pass a TSA security threat assessment. These steps ensure that drivers are equipped to safely handle and transport hazardous materials.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Maine or any other state. The endorsement is required by federal law to ensure that drivers are properly trained and capable of handling hazardous materials safely and effectively. Violating this can lead to serious penalties.
Yes, you can add the CDL Hazmat endorsement to your existing CDL license. You don't need to apply for a new license. However, you must pass the Hazardous Materials Endorsement Knowledge Test and a TSA security threat assessment. Once these are successfully completed, the Hazmat endorsement can be added to your current CDL.
