Air Brakes #2
Air Brakes Endorsement Test | Mississippi 2025 #2 Page 4 of 4
Train for FREE online with our Mississippi 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 MS 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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19 . Some air brake systems use alcohol:
To reduce the risk of rust forming on air brake valves.
Some air brake systems contain an alcohol evaporator. This device introduces alcohol into the braking system to inhibit the formation of ice.
20 . 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.
21 . What should happen if the air pressure in the air brake system tanks falls below 60 psi?
The vehicle should stop.
On vehicles with air brakes, a low air pressure warning signal will come on if the pressure in the air tanks falls below 60 psi. On large buses, the signal may activate at 80 to 85 psi.
22 . If the low pressure warning light comes on while you are driving:
You should stay at least 100 feet away from other vehicles.
When driving a vehicle with air brakes, if the low air pressure warning light comes on, it is important for you to stop and safely park your vehicle as soon as possible. There may be a leak in the system. Controlled braking will remain possible only as long as there is enough air left in the tanks.
23 . A slack adjuster should move no more than ____ from where it is attached to the push rod.
Before a trip, you should check each slack adjuster after parking, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure that they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
24 . To use the stab braking method, you should:
Apply the emergency brake until the vehicle starts to slow.
The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, and then the process is repeated.
25 . When traveling down a steep downgrade, the best way to use your brakes is to:
Apply consistent pressure to the brake pedal all the way down the hill.
On a long or steep downgrade, brakes should only be used to supplement the braking effect of the engine. Apply the brakes just enough to feel a definite slowing down, then release them once you are about 5 mph below your target "safe" speed. Once your vehicle reaches its safe speed again, repeat this process.
See the exact questions that will be on the 2025 Mississippi DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2025 Mississippi | Frequently Asked Questions
To secure a CDL Bus endorsement in Mississippi, you must first have a Commercial Driver's License (CDL). Then, pass the Passenger Vehicles test to get the Passenger (P) endorsement. This includes written and skills tests on inspecting passenger vehicles, loading/unloading passengers, and emergency procedures. Check with the Mississippi Department of Public Safety for specific requirements and procedures.
To obtain a CDL Bus license, you must have a valid driver's license, pass a physical examination, and complete a training course. Afterward, you'll need to pass the Commercial Driver's License (CDL) general knowledge test and the passenger endorsement test. Finally, you must pass a skills test in the type of bus you wish to drive.
In Mississippi, specific training is not mandated by the state for a CDL Bus endorsement, but it's highly recommended. Training can help you pass the required written and skills tests. Some employers may also require it. Experience driving similar vehicles can be beneficial but is not explicitly required by the state. Always check with the Mississippi Department of Public Safety for any updates.
CDL Bus licenses fall under Class A, B, or C. Class A doesn't typically apply to bus drivers. Class B is for commercial vehicles like city buses. Class C is for vehicles designed to carry 16 or more passengers (including the driver) not covered by B class. The specific class required depends on the vehicle's size and capacity.
In Mississippi, you cannot use your personal vehicle for a CDL Bus driving test. The vehicle you use must match the class of CDL you are trying to obtain. For example, if you're applying for a passenger bus endorsement, you will need to take the test in a vehicle that meets the specific requirements for that endorsement as outlined by the Mississippi Department of Public Safety.
During the CDL Bus driving test in Mississippi, you will be evaluated on skills such as vehicle inspection, basic control skills like backing and parking, and on-road driving. This includes handling intersections, traffic signals, stopping at railroad crossings, and highway driving. You will also be assessed on your ability to handle emergency situations and maintain passenger safety.
Yes, additional medical prerequisites are required for a CDL Bus endorsement in Mississippi. You must pass a Federal Motor Carrier Safety Administration (FMCSA) physical examination every 24 months. The exam assesses physical and mental health to ensure you can safely operate a commercial vehicle. This includes checks on vision, hearing, blood pressure, and absence of any medical conditions that could impede safe driving.
No, it's not permissible to transport passengers without a valid CDL Bus endorsement in Mississippi. The endorsement is a legal requirement indicating that the driver has passed the necessary tests and demonstrated the skills needed to safely operate a passenger vehicle. Driving without this endorsement can result in fines, license suspension, or other legal consequences.
In Mississippi, you can add a CDL Bus endorsement to your existing license. You don't need a new application. However, you are required to pass the passenger vehicle knowledge test and the skills test in a passenger vehicle of the same class your current CDL permits you to drive. Also, a valid Department of Transportation medical card is necessary.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Mississippi. Drivers must maintain a clean driving record and pass regular physical exams. They must also comply with federal regulations regarding hours of service, which limit the number of hours they can drive without rest. Failure to adhere to these rules can result in the suspension or loss of the endorsement.
