Knowledge Test Class B #2
Class B Driving Test | North Carolina 2024 #2 Page 7 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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43 . Bridges usually:
Have heaters to prevent them from freezing.
Bridges usually freeze before the rest of the road. You should be especially careful when crossing bridges if the temperature is near the freezing point.
44 . What should you do if the braking system cannot build up hydraulic pressure?
If your hydraulic braking system will not build up the pressure needed to slow or stop your vehicle, there are a few possible solutions. Try shifting into a lower gear, pumping the brakes, and/or using the emergency brake.
45 . An open automobile window in cold weather may indicate that the driver is:
Enjoying the fresh air.
It is important to observe other drivers' behaviors and identify clues that indicate when 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. A person driving with their window open in cold weather may be impaired.
46 . Roads are especially slippery right after it begins to rain because:
Roads are often especially slippery when it first begins to rain. Rainwater forms a slick film when mixed with oil and grease on the road surface that has not yet washed away.
47 . If a truck is equipped, a trailer brake hand valve can be used to:
If a tractor-trailer is so equipped, the trailer brake hand valve can be used to stop the vehicle from rolling back when being started from a stop.
48 . While operating a CMV:
You are always required to wear a safety belt.
A safety belt is your best defense in the event of a collision. You must always wear a safety belt while operating a CMV.
49 . 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.
50 . What do anti-lock brakes do?
Prevent a vehicle from accelerating while traveling downhill
