Combination #2
Combination Vehicles Practice Test | Mississippi 2025 #2 Page 2 of 3
Train for FREE online with our Mississippi CDL combination vehicle 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 combination 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 DMV requirements for issuing a combination license may vary from state to state.
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8 . The service air line is attached to the:
Steering wheel.
The service air line carries air and is controlled by either the foot brake or trailer hand brake. The service air line is attached to relay valves, which allow the trailer brakes to be applied quickly.
9 . Rollovers are most likely to happen when:
It is raining.
Rollovers happen when an operator turns too fast. Drivers should be sure to slow down before entering turns and curves, especially when transporting a fully-loaded rig.
10 . The emergency air line:
Prevents skids.
The emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks on a combination vehicle, and the second is to control the emergency brakes.
11 . If unsure if a trailer has an Anti-Lock Braking System (ABS), you can:
If you do not know whether or not a trailer is equipped with ABS, look under the vehicle for the electronic control unit and wheel speed sensor wires coming from the back of the brakes.
13 . When backing up while coupling a trailer, the tractor should be positioned:
When backing up to couple a trailer, you should position the tractor directly in front of the trailer. Trying to couple while backing at an angle could cause the trailer to move and the landing gear to break.
14 . Failure to keep the fifth wheel plate properly greased could:
Affect the lights.
Failure to keep the fifth wheel plate properly lubricated can create friction between the tractor and trailer, causing steering problems.
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2025 Mississippi | Frequently Asked Questions
A CDL Class B license in Mississippi allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not exceeding 10,000 pounds. This includes buses, farm labor vehicles, and any vehicle designed to transport 16 or more passengers (including the driver).
A Class B CDL license in Mississippi permits the operation of 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 straight trucks, large buses, segmented buses, box trucks (like delivery drivers and couriers), and dump trucks with small trailers.
To acquire a Class B CDL license in Mississippi, you must be at least 18 years old (21 for interstate driving), have a valid Mississippi driver's license, pass a vision exam, and successfully complete a general knowledge test. You'll also need to pass a skills test, which includes vehicle inspection, basic controls, and on-road driving. Finally, you must pass any relevant endorsement tests.
In Mississippi, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL) for intrastate operation (within Mississippi only). However, to operate a commercial vehicle across state lines (interstate operation), you must be at least 21 years old.
While not necessary for a basic Class B CDL, endorsements can expand the types of vehicles you may drive or the cargo you can carry. Endorsements include passenger (P), school bus (S), tanker (N), hazardous materials (H), and a combination of tanker and hazardous materials (X). Each endorsement requires passing specific tests.
The Class B CDL skills assessment in Mississippi encompasses three parts: pre-trip inspection, basic vehicle control, and on-road driving. The pre-trip inspection tests your knowledge on vehicle safety. Basic vehicle control evaluates your ability to maneuver the vehicle. On-road driving tests your skills in traffic situations, including left and right turns, intersections, railway crossings, and various types of lanes.
Class B CDL license holders in Mississippi are limited to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 lbs or more, or towing a vehicle not exceeding 10,000 lbs GVWR. They can't operate Class A vehicles unless they upgrade their license. They're also restricted from driving vehicles requiring specific endorsements unless they've passed the necessary tests.
In Mississippi, the Class B CDL written test is typically offered in English. However, some locations may offer the test in Spanish. It's best to check with the specific testing location to confirm language options. It's important to note that all drivers must understand English to some degree, as federal law requires it for road communication.
Yes, you can request accommodations for the Class B CDL written exam if you have a disability. The Mississippi Department of Public Safety works to ensure all applicants have equal access to the testing process. It's essential to make your request well in advance of your test date to allow time for arrangements to be made.
If you don't pass the Class B CDL written test in Mississippi, you can retake it. However, you must wait at least one day before retaking the exam. There may be additional fees for each retest. It's recommended to study the CDL manual thoroughly before attempting the test again.
