Air Brakes #2
Air Brakes Endorsement Test | Missouri 2024 #2 Page 2 of 4
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.
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7 . Air tank drains should:
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.
8 . The ____ are activated by an electric switch that is triggered by the brake pedal.
In a vehicle with air brakes, the brake lights are activated when the brake pedal is pushed and air pressure moves an electric switch. With the application of air pressure, the switch will then turn on the brake lights.
9 . If the safety relief valve in the air brake system releases air:
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.
10 . The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver:
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.
11 . If the low air pressure warning signal comes on, you should:
If the low air pressure warning signal comes on while you are driving a vehicle with air brakes, you should immediately bring the vehicle to a safe stop while you are still able to control the brakes. Inspect and repair the brakes as soon as possible.
12 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
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2024 Missouri | Frequently Asked Questions
A CDL Class B license in Missouri permits the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. This covers vehicles like buses, dump trucks, and straight trucks. You must pass a knowledge test and skills test to obtain this license.
A Class B CDL license in Missouri allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds. This includes large buses, segmented buses, dump trucks, straight trucks, delivery trucks, and utility trucks. It does not include tractor-trailers.
To acquire a Class B CDL license in Missouri, you must be at least 18 years old (21 for interstate driving), possess a valid non-commercial driver's license, pass a vision test, and obtain a medical certificate. You'll also need to pass a written knowledge test and a skills test, which includes a pre-trip vehicle inspection, basic vehicle control, and on-road driving.
In Missouri, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL) for intrastate driving (within Missouri borders). However, if you plan to drive interstate (across state or country borders), you must be at least 21 years old.
Specific endorsements aren't necessary for a Class B CDL license, but they can expand your driving capabilities. Endorsements like passenger and school bus, tank vehicle, double/triple trailers, and hazardous materials can be added after passing additional written and skills tests. Each endorsement may have additional requirements. Check with your local DMV for specifics.
The Class B CDL skills assessment in Missouri includes three main parts: a pre-trip vehicle inspection to check your understanding of your vehicle and its safety, a basic vehicle control test to assess your ability to maneuver and control the vehicle, and an on-road driving test to evaluate your driving skills in various traffic situations and road conditions.
Yes, Class B CDL license holders in Missouri are limited to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a towing vehicle not exceeding 10,000 pounds GVWR. They're also restricted from driving a Class A vehicle unless they have the appropriate endorsement. Other restrictions may apply based on endorsements and medical conditions.
Yes, it is possible. In Missouri, the written Class B CDL test can be taken in English or Spanish. However, Federal regulations require that anyone applying for a commercial driver's license must be able to read and understand English well enough to converse with the general public, understand highway signs and signals, respond to official inquiries and make entries on reports and records.
Yes, test accommodations can be requested for the Class B CDL written exam in Missouri due to disability. These may include accessibility features or alternative testing formats. It's important to make the request at the time of scheduling your exam and provide appropriate documentation to support your request. Contact your local DMV for specific procedures.
Yes, you can retake the Class B CDL written test in Missouri if you fail on your first attempt. Applicants must wait at least one day before retesting. There is a $25 retest fee for each attempt. If you fail three times, you must wait 30 days before your next attempt. It's recommended to study thoroughly to ensure success on the next try.
