Knowledge Test Class B #1

Class B Driving Test | Tennessee 2026 #1 Page 5 of 7

Train for FREE online with our Tennessee 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 TN CDL class B permit in 2026, practice as much as.. Read More

Train for FREE online with our Tennessee 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 TN 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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29 . Foundation brakes are used:

At each wheel. Foundation brakes are used at each wheel. The most common type is the S-cam drum brake.

30 . Emergency brakes:

All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.

31 . If the safety relief valve in the air brake system releases air:

An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

32 . Being convicted of driving under the influence and losing your license while driving your personal vehicle:

If you lose the right to drive your personal vehicle due to an alcohol-related violation, this will result in the loss of your CDL for one year.

33 . Fuel records supporting IFTA quarterly fuel use tax returns must be kept by carriers for:

Four years. In general, if you operate a commercial vehicle in interstate commerce, it must be registered under the International Registration Plan (IRP) and International Fuel Tax Agreement (IFTA). These programs collect and distribute vehicle registration fees and fuel taxes based on what jurisdictions you drive in and for how long. Mileage and fuel records supporting IFTA quarterly fuel tax returns must be retained by carriers for four years.

34 . If brakes overheat while going down a downhill grade, they may:

Overuse of the brakes may cause them to overheat, making them less effective. This is known as "fade."

35 . When driving, how can you maintain alertness?

Strategies to avoid becoming fatigued while driving include keeping the cab cool inside by using the air conditioner or opening a window; avoiding heavy foods; and taking rest breaks about every two hours or 100 miles.

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