Knowledge Test Class A #2
Class A Driving Test | District Of Columbia 2024 #2 Page 5 of 7
Train for FREE online with our District Of Columbia 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 DC CDL class A 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 A requirements may vary from state to state.
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29 . A dual air brake system:
Has two separate air brake systems, but uses a single set of controls.
A dual air brake system has two separate air brake systems that use a single set of brake controls. One system typically operates the regular brakes on the rear axle or axles. The other system operates the regular brakes on the front axle.
30 . If you’re not sure how to handle a fire, you should:
Keep the vehicle running.
If you are unsure of which method is appropriate to use to extinguish a fire, you should wait for firefighters to arrive and let them handle it. This is especially important when dealing with hazardous materials fires.
31 . When inspecting the engine compartment, you should not:
Check the windshield washer fluid level.
When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things.
32 . What is the only way to sober up after drinking?
Drink coffee.
The liver removes alcohol from the body at a fixed rate that cannot be increased through tricks like drinking coffee or taking a cold shower. The only way to sober up after drinking is to wait for the alcohol to be removed from your system.
33 . Brakes can get out of adjustment:
If brakes on one side are used more often than brakes on the other side.
Brakes are particularly prone to getting out out adjustment if they are hot. Use proper braking techniques to avoid letting your brakes overheat.
34 . If an Anti-Lock Braking System (ABS) malfunctions:
The brakes will not work.
On a vehicle with ABS, a yellow malfunction lamp on the instrument panel will illuminate to alert you if the braking system is not working.
35 . When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Brake with less force than you would in a vehicle not equipped with ABS.
