Knowledge Test Class B #2
Class B Driving Test | Arkansas 2024 #2 Page 4 of 7
Train for FREE online with our Arkansas 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 AR 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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22 . If you must stop on the side of a highway, how far behind your vehicle should warning devices be placed?
100, 200, and 500 feet
When stopping your CMV on the side of a highway, warning devices must be placed 10 feet, 100 feet, and 200 feet behind the vehicle.
23 . If you will be transporting hazardous materials that require placards, you must:
To operate a vehicle of any size that is used to transport hazardous materials requiring placards, you must have a CDL with a hazardous materials endorsement.
24 . Hydraulic brakes can fail for one of two reasons. Which of the following is one of those reasons?
The brakes are used too much in one day.
Most hydraulic brake failures occur for one of two reasons. A first likely cause of brake failure is that the brakes have been overused on a downgrade, causing them to fade. The second likely cause is that there has been a loss of hydraulic pressure in the braking system. Brakes kept in good condition will rarely fail, but you should know which steps to take in case they do.
25 . Air brakes use ____ to function.
The brakes in an air brake system use compressed air to function properly.
26 . When starting a vehicle, the oil pressure should:
After starting a vehicle's engine, the oil pressure should come up to a normal level within seconds. Do not operate a vehicle if it has oil pressure that is low, dropping, or fluctuating.
27 . After starting a trip while transporting cargo:
The cargo should be inspected after 50 miles on the road to ensure it is still properly secured.
The securement of cargo must be checked before beginning a trip, within the first 50 miles of a trip, and then again every three hours or 150 miles.
28 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
