Knowledge Test Class B #1
Class B Driving Test | North Dakota 2025 #1 Page 4 of 7
Train for FREE online with our North 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 ND CDL class B permit 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 CDL class B requirements may vary from state to state.
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22 . If a truck's Anti-Lock Braking System (ABS) is not working:
The truck will lack brakes on its left side.
If an ABS system fails, the vehicle will still have normal braking function. The driver should continue to drive and brake as they normally would.
23 . An Anti-Lock Braking System (ABS):
Should only be used if all axles have ABS.
Anti-Lock Braking Systems (ABS) are compatible with air braking systems. ABS helps maintain control of a vehicle and prevents the wheels from locking up during hard braking on slippery surfaces. ABS can still provide benefits even if is present on only one axle.
24 . A thin layer of ice that forms on road surfaces is called:
Blue 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.
25 . If one air system in a dual air brake system is very low on pressure:
Lights on the outside of the tractor will flash.
In a dual air brake system, if one of the air systems gets very low on pressure, either the front or rear brakes will not be operating fully. You should bring your vehicle to a safe stop and have the air system repaired.
26 . Dollies equipped with ABS are required to have malfunction lamps located where?
On the top
A dolly equipped with an Anti-Lock Braking System (ABS) is required to have a yellow malfunction lamp located on its left side.
27 . When using your mirrors, you should frequently look at your tires to:
Get a sense of the size of the tire in relation to other vehicles.
Check your tires regularly when looking in your mirrors. This helps ensure that you will notice a tire fire, if one should happen. Tire fires may occur when a tire is under-inflated, if dual tires are touching, or if the tires are otherwise overheated.
28 . Friction inside a brake drum is caused when the brake shoes and linings:
Create excess heat.
