Knowledge Test Class A #1
Class A Driving Test | District Of Columbia 2024 #1 Page 4 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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22 . When a vehicle is started, warning lights and buzzers:
Should not come on.
After an engine is started, the warning lights and buzzers for oil, coolant, charging circuits, and the Anti-Lock Braking System (ABS) should go out right away.
23 . Too little weight on a steering axle can result in:
Improved gas mileage.
The weight of cargo in a vehicle needs to be balanced appropriately so that it does not interfere with the vehicle's safe handling. For example, if cargo is placed too far to the rear of a vehicle, the front axle will be under-weighted and the front wheels may not have enough traction for the driver to steer safely.
24 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.
25 . Sometimes, when checking the automatic transmission fluid level:
Your vehicle may have to be left running.
In some vehicles, you may have to leave the engine running to check the automatic transmission fluid level.
26 . While driving:
A driver should always use turn signals to inform others of their intentions.
It is essential that a driver always uses proper signals to make their intentions known to others on the road.
27 . 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.
28 . What is a danger of rolling back when you start to accelerate?
You may lose your position in traffic.
