Knowledge Test Class A #2
Class A Driving Test | Tennessee 2026 #2 Page 5 of 7
Train for FREE online with our Tennessee class A 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 A 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 A requirements may vary from state to state.
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29 . Wheel rims that have been welded should:
Wheels or rims that have had welding repairs are not safe to be used.
30 . When a vehicle is started, the coolant temperature should:
After an engine is started, the coolant temperature should begin a gradual rise toward the normal operating range.
31 . What is Gross Combination Weight?
Gross Combination Weight (GCW) is the total weight of a powered unit, its trailer(s), and the cargo being carried.
32 . Antifreeze helps to keep an engine functioning properly:
It is always important to have enough water and antifreeze in a vehicle's cooling system. Despite the name, antifreeze is beneficial to an engine even in hot weather.
33 . The two markings on a front brake limiting valve usually read:
Some vehicles with air brake systems manufactured before 1975 have a front brake limiting valve with "normal" and "slippery" settings.
34 . Tread depth in the major grooves on a front tire should be at least:
3/4 of an inch.
