Air Brakes Endorsement Test | Missouri 2024 #2

Train for FREE online with our Missouri 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 MO Class A/Class B driver license in 2024, 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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . Why do large vehicles use air brakes?

Other brake systems squeak too loudly.

Air brakes are very effective systems.

Other braking systems are hard to come by.

If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.

2 . The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

1 psi

2 psi

3 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 the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

3 . A low air pressure warning signal:

Is not recommended on vehicles with air brakes.

Is required on vehicles with air brakes.

Is optional on vehicles with air brakes.

Any vehicle with air brakes must be equipped with a low air pressure warning signal.

4 . Failing to drain air tanks could result in:

Water accumulations freezing and causing brake failure.

Squishy brakes.

Too much air collecting in the tanks.

In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.

5 . Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.

Green

Blue

Yellow

Vehicles with ABS have yellow malfunction lamps to alert drivers when the braking systems are not working. Be sure you know where the malfunction lamp on your vehicle is before beginning a trip.

6 . If the safety relief valve in the air brake system releases air:

The compressor needs more air.

There is something wrong with the brakes.

You may continue driving.

An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

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2024 Missouri | Frequently Asked Questions

To secure a CDL Bus endorsement in Missouri, you must first hold a valid Commercial Driver's License (CDL). Then, pass the Passenger Endorsement Knowledge Test and the School Bus Endorsement Knowledge Test at a Missouri State Highway Patrol examination station. Finally, complete a driving skills test in the type of vehicle you wish to drive.

To obtain a CDL Bus license in Missouri, you must be at least 18 years old, possess a valid Missouri driver's license, pass a vision test, and complete a medical examination. You'll need to pass the CDL general knowledge test, the passenger transport test, and the school bus endorsement test. Finally, you must successfully complete a skills test in a bus.

While Missouri doesn't require specific training for a CDL Bus endorsement, it's recommended to complete a professional training program. This helps prepare for the written knowledge and skills tests. You must pass the Passenger Endorsement and School Bus Endorsement knowledge tests, and a driving skills test in a bus-like vehicle. Prior experience driving large vehicles can also be beneficial.

CDL Bus licenses in Missouri fall under Class B or Class C. Class B is for vehicles designed to transport 16 or more passengers, including the driver, or vehicles over 26,000 pounds. Class C is for vehicles designed to transport 16 or more passengers, including the driver, but weighing less than 26,000 pounds. Both require a passenger (P) endorsement.

No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle used must match the class and type of vehicle that matches the CDL license you're applying for. Therefore, for a CDL Bus endorsement, you must test in a commercial bus-like vehicle that is representative of the type of bus you'll be driving.

During the CDL Bus driving test in Missouri, various skills are evaluated. These include pre-trip vehicle inspection, basic vehicle control, and on-road driving. On-road driving includes right and left turns, intersections, railway crossings, curves, and various types of roadways. Also evaluated are skills like stopping at designated points, backing up safely, and responding appropriately to traffic signals and signs.

Yes, there are additional medical requirements for a CDL Bus endorsement in Missouri. Applicants must pass a Department of Transportation (DOT) physical examination every 24 months. The physical includes vision and hearing tests, blood pressure check, and an assessment of physical abilities necessary for driving a commercial vehicle safely.

No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Missouri. The law requires drivers who operate commercial vehicles transporting 16 or more passengers, including the driver, to hold a valid CDL with a passenger (P) endorsement. Driving without the appropriate endorsement could lead to heavy fines and penalties.

In Missouri, you can add a CDL Bus endorsement to your existing license. You don't need to apply for a new license. However, you must pass the Passenger Endorsement written test and the skills test in a vehicle representative of the type of bus you'll be driving. Always check with the Missouri Department of Revenue for specific requirements.

Yes, drivers with a CDL Bus endorsement in Missouri are subject to certain restrictions. They must maintain a clean driving record, pass regular physical examinations, and comply with drug and alcohol testing rules. Violations can result in suspension or revocation of the endorsement. Also, drivers must not exceed the passenger capacity specified for their vehicle.