Knowledge Test Class B #2
Class B Driving Test | Utah 2026 #2 Page 2 of 7
Train for FREE online with our Utah 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 UT CDL class B permit in 2026, 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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8 . 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.
9 . Rough acceleration:
Should be done on surfaces with poor traction.
Accelerate smoothly and gradually. Rough acceleration can cause mechanical damage.
10 . After a vehicle is started, the engine oil pressure should come up to normal:
After five minutes.
After a vehicle's engine is started, the engine's oil pressure should rise to its normal level within seconds. Do not drive a vehicle with oil pressure that is too low.
11 . Mismatched tire sizes are acceptable on the rear axles.
When inspecting a vehicle's tires, you should verify that there are no tires of mismatched sizes.
12 . To apply for a CDL, you must be at least:
25 years old.
You must be at least 18 years old to apply for a CDL. However, you must be at least 21 years old to drive in interstate commerce, as well as to have a hazardous materials, passenger, or school bus endorsement.
13 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
