FREE CDL Class B Driving Test Online | South Carolina 2024 Page 3 of 7
Train for FREE online with our South Carolina class B license 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 SC CDL class B permit in 2021, 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 CDL class B requirements may vary from state to state.
15 . If planning to drive a vehicle placarded for hazardous materials, you do not need a hazardous materials endorsement.
You must have a CDL with a hazardous materials endorsement to operate a vehicle of any size that is used to transport defined classes of hazardous materials.
16 . What is the average driver’s reaction time?
The average driver has a reaction time between three-quarters of a second and one second. At 55 mph, this corresponds to a distance of 61 feet traveled.
17 . 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.
18 . If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?
When inspecting a vehicle with air brakes that has a belt-driven air compressor, you should check the condition and tightness of the belt. It should be in good condition.
19 . A vehicle with air brakes may be driven without an air brake endorsement.
If you do not take or pass the air brakes test, you will be restricted to operating vehicles without air brakes.
20 . An applicant hoping to be a city bus driver needs a passenger endorsement.
All applicants seeking to be licensed to drive a bus must pass the passenger endorsement test.
21 . Mismatched tire sizes are acceptable on the rear axles.
When inspecting a vehicle's tires, you should verify that there are no tires of mismatched sizes.
See the exact questions that will be on the 2024 South Carolina DMV exam.
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