Knowledge Test Class B #1
Class B Driving Test | North Carolina 2024 #1 Page 3 of 7
Train for FREE online with our North 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 NC CDL class B permit in 2024, 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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15 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
16 . An applicant must be at least ____ to obtain a CDL for use in interstate commerce.
25 years old
An applicant must be at least 21 years old to obtain a CDL for use in interstate commerce. They must be at least 18 years old to obtain a CDL for use in intrastate commerce.
17 . Driving with a cargo of hanging meat in a trailer:
An operator should drive with care when transporting a cargo of hanging meat. Such a load is unstable, both because it has a high center of gravity and because the swinging of the meat can affect the driver's handling of the vehicle.
18 . A person driving with an open window in cold weather may be:
It is important to observe other drivers' actions and identify clues that a person could be driving impaired. Drivers who have had too much to drink, are sleepy, are on drugs, or are ill can present hazards to other drivers. One sign that a driver may be impaired is that they have their windows rolled down in cold weather.
19 . What do anti-lock brakes do?
Prevent a vehicle from accelerating while traveling downhill
The function of an Anti-Lock Braking System (ABS) is to prevent the vehicle's wheels from locking up from hard brake application.
20 . If feeling tired and frequently yawning, you should:
Pull over and take a nap.
Frequent yawning is a warning sign of fatigue. If you become tired while driving, the only safe response is to stop and get some sleep. You cannot rely on artificial stimulants, like caffeine, to keep you alert because they will eventually wear off and leave you more tired than you originally were.
21 . If you are confronted by an aggressive driver, you should:
Ignore the driver's gestures.
