Knowledge Test Class B #2

FREE CDL Class B Driving Test Online | South Dakota 2024

Train for FREE online with our South Dakota 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 SD CDL class B permit in 2021, practice as much as..

Train for FREE online with our South Dakota 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 SD 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.

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1 . ____ is a thin layer of ice that forms on road surfaces.

Sharp ice Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet. You should be very careful when temperatures are below freezing and the road looks wet.

2 . A Class 1 hazardous material is:

Explosives are placed in hazardous materials Class 1.

3 . Most heavy vehicles require ____ to change gears.

Triple shifting Most heavy vehicles with manual transmissions require double clutching to change gears. A driver should release the accelerator, push in the clutch, and shift into neutral at the same time. After releasing the clutch and allowing the vehicle to change to the necessary speed, the driver should push in the clutch, shift gears, then simultaneously release the clutch and accelerate.

4 . How many daily hours of sleep does an adult need to maintain alertness?

Four to five Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.

5 . Over-length loads require:

Over-length, over-width, and/or overweight loads may require special permits from the Department of Transportation.

6 . Without oil in its engine:

A vehicle's gas mileage will improve. An engine can be rapidly destroyed if it is run without oil. If its oil pressure gauge is low or fluctuating, do not operate a vehicle.

7 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?

The brakes may explode. If you use the parking brakes when the weather is very wet and the temperature is below freezing, the brakes may become frozen, preventing the vehicle from moving.

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