Air Brakes #2
Air Brakes Endorsement Test | Louisiana 2025 #2 Page 3 of 4
Train for FREE online with our Louisiana 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 LA 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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13 . Using the brakes creates heat. If too much heat is produced:
Brakes are designed to take a lot of heat, but drivers should not rely solely on the brakes to slow their vehicle. Brakes may fade and lose their ability to slow down the vehicle if they become too hot, so drivers should also rely on the engine braking effect.
14 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
15 . Having ABS on only one axle:
If you have an Anti-Lock Braking System (ABS) equipped on only the tractor, only the trailer, or only one axle, you will still have more control over the vehicle when braking than you would without ABS. You should brake normally.
16 . When operating a vehicle with a dual air brake system, the driver should:
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems. Watch the air pressure gauges to monitor the pressure levels.
17 . Brakes can get out of adjustment quickly, especially:
Brakes are particularly prone to getting out of adjustment if they are hot. Be sure to routinely check the adjustment of your brakes. For a vehicle to be safely controlled, all brakes must be properly functioning and adjusted.
18 . What can happen if the air pressure gets too low in an air brake system?
Pressing and releasing the brake pedal unnecessarily can let air out of the braking system faster than the compressor can replace it. Air brakes may cease to work effectively if the pressure becomes too low.
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2025 Louisiana | Frequently Asked Questions
To secure a CDL Bus endorsement in Louisiana, you must first hold a valid Commercial Driver's License (CDL). Next, you need to pass the Passenger Transport Test and the School Bus Endorsement Test. Additionally, you must complete a background check, physical exam, and a skills test in the type of bus you'll be driving. Check with the Louisiana Office of Motor Vehicles for specifics.
To obtain a CDL Bus License, you need a valid driver's license and must be at least 21 years old. You'll need to pass a series of written exams, including General Knowledge, Passenger Transport, and School Bus Endorsement tests. A physical exam is required, as well as a skills test in the type of bus you'll be driving. A background check is also necessary.
Yes, specific training is necessary for a CDL Bus endorsement. Applicants must complete a state-approved commercial driver's training course. This course includes both classroom instruction and practical skills training. After the course, applicants must pass a written knowledge test and a skills test, which includes vehicle inspection, basic controls, and on-road driving.
CDL Bus licenses fall under three main classifications: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 pounds, where the vehicle being towed is over 10,000 pounds. Class B is for single vehicles over 26,001 pounds or towing a vehicle not over 10,000 pounds. Class C is for vehicles designed to transport 16 or more passengers including the driver.
No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle you use for the test must match the type and class of CDL you are applying for. For a bus endorsement, you need to test in a bus of the appropriate size. The vehicle must also meet all legal requirements for safety and operation.
The CDL Bus driving test evaluates several skills. These include pre-trip vehicle inspection to ensure safety and roadworthiness, basic vehicle control tests such as backing up, and an on-road driving test. The on-road test assesses your ability to handle intersections, railway crossings, curves, and various types of traffic conditions. It also tests your knowledge of bus-specific laws and regulations.
Yes, there are additional medical requirements for a CDL Bus endorsement. Applicants must pass a Department of Transportation (DOT) physical examination every 24 months. This exam evaluates vision, hearing, blood pressure, and checks for conditions like diabetes and epilepsy that could interfere with safe driving. The results are documented on a DOT medical certificate.
No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Louisiana. Operating a commercial vehicle such as a bus requires specific training and licensing. If you're caught driving without the appropriate endorsement, you could face heavy fines, license suspension, and even jail time. Always ensure your CDL endorsements are current and valid before driving.
Yes, the CDL Bus endorsement can be added to your existing Commercial Driver's License (CDL) in Louisiana. You will need to pass the passenger endorsement knowledge test, and if you're driving a school bus, you'll also need to pass the school bus endorsement test. No new application for a CDL is required, just the specific tests for the endorsement.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Louisiana. Drivers must not have any serious traffic violations in the past three years. They must also pass a physical examination every two years and comply with drug and alcohol testing rules. Furthermore, bus drivers are required to maintain a logbook documenting their hours to ensure they do not exceed the maximum allowed driving hours.
