Air Brakes #2
Air Brakes Endorsement Test | Massachusetts 2025 #2 Page 2 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 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 the requirements for CDL may vary from state to state.
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7 . Which type of brakes do most heavy-duty vehicles have?
Gravity brakes
For safety, most heavy-duty vehicles are equipped with dual air brake systems.
8 . Air tanks usually hold enough compressed air:
For an unlimited number of stops.
In an air braking system, the air storage tanks can usually hold enough compressed air for the brakes to be used several times.
9 . 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.
10 . An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.
450 feet
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.
11 . All air tanks must include:
A warning sticker.
Air brake system tanks must contain drain valves. These valves are used to drain accumulated oil and water from the tanks and may be either manually or automatically operated.
12 . If the brake pads rub against the brake drums and create too much heat:
The air compressor will kick on to cool the brakes.
Brakes heat up with use. If they are overused and become too hot, expansion and chemical changes will make them less effective and eventually cause them to stop working altogether. This is known as "brake fade."
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2025 Massachusetts | Frequently Asked Questions
To secure a CDL Bus endorsement in Massachusetts, you must first have a valid Commercial Driver's License (CDL). Then, you need to pass the Passenger Vehicles (P) and School Bus (S) endorsement knowledge tests. After passing the tests, you must also pass a skills test in a vehicle representative of the class and type you will be driving.
To obtain a CDL Bus License in Massachusetts, you must have a valid driver's license and pass the CDL general knowledge test. You also need to pass the Passenger Transport test and the School Bus endorsement test if applicable. Finally, you must successfully complete a skills test in an appropriate vehicle. You must be at least 18 years old and meet medical requirements.
Yes, specific training is necessary for a CDL Bus endorsement in Massachusetts. You must complete a state-approved driver education program that includes classroom instruction and behind-the-wheel training. The program will cover topics such as vehicle inspection, basic controls, and safe driving techniques. After the training, you must pass both knowledge and skills tests to obtain the endorsement.
In Massachusetts, CDL Bus licenses fall into three classes: Class A, B, and C. Class A licenses are for vehicles with a combined weight rating of 26,001 pounds or more. Class B licenses are for vehicles weighing 26,001 pounds or more, or a vehicle transporting 16 or more passengers. Class C licenses are for vehicles designed to transport 16 to 23 passengers, including the driver.
No, you cannot use your personal vehicle for the CDL Bus driving test in Massachusetts. The vehicle you use for the test must be of the same type and class that your CDL will cover. Therefore, you must take the test in a commercial bus. Many training schools provide vehicles for testing purposes.
The CDL Bus driving test in Massachusetts evaluates several skills. These include pre-trip vehicle inspection to ensure your bus is safe to drive, basic control skills like backing, parking, and turning, and on-road driving to assess your ability to handle a bus in different traffic situations. It also checks your ability to load and unload passengers, react to emergencies, and operate special features of the bus.
Yes, for a CDL Bus endorsement in Massachusetts, you must pass a Department of Transportation (DOT) physical examination. This examination ensures that you're physically capable of safely operating a commercial vehicle. It includes vision and hearing tests, blood pressure check, and an assessment of your overall physical condition. Any severe health issues that could interfere with driving safety may disqualify you.
No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Massachusetts. Operating a commercial vehicle designed to carry 16 or more passengers, including the driver, requires a CDL with a Passenger (P) endorsement. Driving without the appropriate license or endorsement can result in hefty fines, penalties, and potentially the suspension of your driving privileges.
In Massachusetts, you can add the CDL Bus endorsement to your existing license. You don't need to apply for a new license. However, you must pass the Passenger Vehicles knowledge test and the skills test in a passenger vehicle of the same class that the applicant operates or expects to operate.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Massachusetts. Drivers must not have any serious traffic violations within the past two years. They must pass a physical exam every two years, and they are subject to random drug and alcohol testing. Additionally, drivers must comply with hours-of-service regulations to prevent fatigue-related accidents.
