Air Brakes #1
Air Brakes Endorsement Test | Massachusetts 2026 #1 Page 3 of 4
Train for FREE online with our Massachusetts CDL air brake 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 MA Class A/Class B driver 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 the requirements for CDL may vary from state to state.
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13 . Why do large vehicles use air brakes?
Air is free.
Air brakes are an effective and safe way of stopping large and heavy vehicles, as long as they are maintained and used properly.
14 . Air tank drains:
Must remain open while driving.
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
15 . Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.
100 psi
Before driving a vehicle with a dual air brake system, you should wait for the air compressor to build up at least 100 psi in both the primary and secondary systems.
16 . When you need to stop in an emergency, you should:
Expect your vehicle to slow down more quickly than usual.
If you need to make an emergency stop, you can use either the controlled braking method or the stab braking method. It's important to brake in a way that keeps your vehicle traveling in a straight line while still allowing you to turn, if necessary.
17 . Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Driving uphill.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure drops to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
18 . During a static leakage test, the maximum leakage rate for a single vehicle with air brakes is ____ in one minute.
4 psi
When performing a static leakage test on a single vehicle with air brakes, the leakage rate should be no more than 2 psi in a minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
See the exact questions that will be on the 2026 Massachusetts DMV exam.
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Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
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2026 Massachusetts | Frequently Asked Questions
To acquire a CDL Passenger endorsement in Massachusetts, you need to pass a written knowledge test and a skills test in the type of vehicle you plan to drive. You must already hold a Commercial Driver's License (CDL). Additionally, you may need to pass a background check if you will be transporting school children.
To obtain a CDL Passenger license in Massachusetts, you must be at least 21 years old, possess a valid Massachusetts driver's license, and pass a Department of Transportation (DOT) physical examination. Additionally, you'll need to pass both knowledge and skills tests for the specific class of vehicle you'll be driving. Successful completion of a background check is also required.
Yes, specific training is usually required to secure a CDL Passenger endorsement. The training typically involves learning the specific rules and regulations related to passenger transport, as well as hands-on experience driving the type of vehicle you'll be operating. You'll also need to pass written and skills tests to demonstrate your knowledge and abilities.
Yes, additional written tests are mandatory for obtaining a CDL Passenger endorsement in Massachusetts. In addition to passing the general knowledge test, you must also pass a specific written test for the Passenger endorsement. This test covers topics such as loading and unloading passengers, safe driving practices, and emergency procedures.
During the CDL Passenger endorsement assessment, you'll need to demonstrate skills such as safe loading and unloading of passengers, proper use of emergency exits, driving safely in traffic, and handling unexpected situations. Additionally, you'll be tested on maneuvers like turning, backing up, and parking the specific class of vehicle you'll be operating.
No, it's illegal to transport passengers commercially without a valid CDL Passenger endorsement in Massachusetts. This endorsement ensures that drivers have the necessary training and skills to safely transport passengers. Violating this law can lead to significant fines, loss of your CDL, or even jail time in severe cases.
In Massachusetts, you can add the CDL Passenger endorsement to your existing CDL. You don't need a new application. However, you will need to pass a written knowledge test and a skills test in a vehicle of the same class that you plan to drive with passengers. It's important to check with the RMV for specific procedures and fees.
Yes, there are certain restrictions for drivers with a CDL Passenger endorsement in Massachusetts. For instance, these drivers must not have more than one serious traffic violation in three years. Additionally, they must not operate a vehicle carrying passengers unless all passengers have their seat belts fastened. Violating these restrictions can lead to fines or loss of endorsement.
Yes, to obtain a CDL Passenger endorsement in Massachusetts, you must be at least 21 years old. This age requirement is set by the Federal Motor Carrier Safety Administration (FMCSA) and applies nationwide. It ensures that commercial drivers have sufficient driving experience and maturity to handle the responsibilities of transporting passengers safely.
With a CDL Passenger endorsement in Massachusetts, you're eligible to operate a wide range of passenger vehicles. These include buses, shuttles, and any other commercial vehicles designed to transport 16 or more passengers, including the driver. This endorsement is often required for jobs like city bus drivers, school bus drivers, and shuttle service operators.
