When turning on your vehicle's engine, the lights on the dash should come on and then turn off. If the ABS malfunction light stays on, the system is not working properly. In the case of a truck with a trailer, if the yellow light on the left rear of the trailer stays on once the engine has been started, the system is not working properly.

The yellow light on the left rear of the trailer stays on.

The red light on the right side of the trailer flashes three times.

All the rear lights flash and then turn off.

When driving under foggy conditions, lights cannot be taken as a reliable indication of where the road is. The lights may be coming from a vehicle that has pulled off the road.

The lights may not indicate where the road is as the vehicle may have pulled off the roadway.

You can assume the vehicle ahead is on the road.

Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.

Opened to drain the tanks after each day.

Check your engine during the pre-trip inspection. After starting the engine, you should listen for unusual noises.

Place the engine in first gear.

When planning to turn left at an intersection, make sure you have reached the center of the intersection before beginning the turn. If you turn too soon, off-tracking may cause the left side of your vehicle to hit another vehicle.

May hit other vehicles with the left side of your vehicle.

Will likely complete the turn satisfactorily.

May hit other vehicles with the left side of your vehicle.

Can expect other drivers to move their vehicles to accommodate your turn.

Because you can't see everything behind you, driving in reverse is always dangerous and should be done only when necessary. Before backing into an area, you should exit your vehicle and inspect the path of travel to check for potential hazards, especially overhanging objects that would otherwise be difficult to spot in a mirror.

Inspect the area before backing.

Cut wires or branches as necessary.

Inspect the area before backing.

Class A Driving Test | Oklahoma 2025 #1 Page 6 of 7

Train for FREE online with our Oklahoma 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 OK CDL class A permit in 2025, 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.

Number of Question 50

Passing Score 40

Number of Tests 20

Class A Driving Test | Oklahoma 2025 #1 Page 6 of 7

36 . When starting the engine of a truck with a trailer, you can tell that your vehicle's ABS is not working if:

37 . If you see taillights ahead while you are driving in fog:

38 . How many daily hours of sleep does an adult need to maintain alertness?

39 . Manual air tank drains should be:

40 . When starting an engine as part of a pre-trip inspection, the driver should:

41 . By beginning a left turn before reaching the center of an intersection, you:

42 . If planning to back a vehicle where there may be overhanging objects, a driver should:

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