FREE Air Brakes Endorsement Test Online | Massachusetts 2023
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 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 the requirements for CDL may vary from state to state.
1 . What does the air compressor governor do?
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
2 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
3 . Air tank drains:
In an air brake system, air tanks have drains to remove accumulations of water and compressor oil. Allowing water and oil to accumulate in the system could cause damage to the brakes. Manually operated drains should be used daily.
4 . A tank endorsement is:
In general, a tank endorsement is required to a drive tank vehicle used to transport liquids or gases. This applies to both hazardous and non-hazardous materials.
5 . When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
6 . Braking mechanisms are located ____ a brake drum.
Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.
2023 Massachusetts | Frequently Asked Questions
Three weeks of instruction in a variety of venues.
CLPs are valid for 180 days from the date of issuance and can be renewed once for another 180 days at no cost.
General knowledge, combination vehicles, and air brakes are the three categories in which you will be evaluated for your CDL.
If you arrive prepared, passing the Massachusetts test is simple. Studying the driver's manual improves your chances of passing, but not as much as you may believe. Around half of those who depend solely on the guidebook will fail their permit test.
If you fail the test within ninety days, you have two chances to retake it, although you must normally wait one day between tries and may be charged a reexamination fee each time.