FREE Alabama CDL Practice Test 2024 - DMV Practice Test Page 3 of 7
Your knowledge of traffic signs, signals, right-of-way laws, trucking legislation, speed limits, vehicle inspection, and basic commercial vehicle safety will be examined to help you become a safer driver today. Each of our 50 multiple-choice questions is based on the Alabama Commercial Drivers Handbook and applicable Alabama statutes. Use our online Alabama tank endorsement practise test for free. Please keep in mind that state DMV criteria for obtaining a CDL tank vehicle endorsement may differ.
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15 . If the spring brakes are activated, you should never:
Open the door to the cab.
Never apply the brake pedal if your spring breaks are activated. Brakes can be damaged if they are subject to both springs and air pressure.
16 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
100 psi
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
17 . When driving through fog, a driver should:
Drive on the shoulder.
If you must drive in fog, you should use your low beam headlights.
18 . When driving at night, you should do all of the following, except:
To ensure that you can see as well as possible, don't wear sunglasses when driving at night. If you wear eyeglasses, make sure they are clean and unscratched. Make sure you are rested and alert before driving at night.
19 . During a static leakage test, the maximum leakage rate for a single vehicle with air brakes is ____ in one minute.
4 psi
