General Knowledge CDL Permit Prep Test -

Successfully taking an online quiz is no guarantee of passing permit exam. WhereTruckersGo.com is not responsible for your exam results.

General Knowledge Prep Test:

Enter your text here

Name Email

1. You are driving a long vehicle that makes wide turns. You want to make a left turn from Ocean street onto Atlantic Street. There are two left turn lanes (marked A and B) on Ocean street. You should:

Use left turn lane A

Use left turn lane B.

Start in left turn land A and swing into left turn lane B just before entering the intersection.

2. When exiting or entering on a curved freeway ramp, you should:

Maintain a speed 5-10 mph under the posted speed limit.

Maintain the posted speed limit.

Slow down to at least 50% of the posted speed limit.

3. You do not have Hazardous materials endorsement in your commercial driver license. You can drive a vehicle hauling hazardous materials when:

The load of the hazardous materials is 26 pounds or less

The vehicle does not require placards

The person who has Hazmat endorsement drives with you.

4. You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long , steep downhill grade?

The same gear you would use to climb the hill

A higher gear than you would us to climb the hill?

A lower grade than you would use to climb the hill.

5. Which of these statements about engine overheating is true?

You should never shut off an overheated engine untill it cools

You should never remove the radiator cap on a pressurized system until the system is cooled.

Antifreeze is not needed when the weather is warm.

6. Which may be a sign of tire failure?

Wheel skidding.

A loud hissing noise.

Vibration.

7. You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?

A vehicle can be safely driven with one missing lug nut on a wheel.

Rust around wheel nuts may mean that they are loose.

Mismatched lock rings can be used on the same vehicle.

8. If you must stop into the oncoming lane as you make a turn, you should:

Watch for an oncoming traffic.

Complete your turn without stopping

Back to allow the oncoming traffic to pass

9. How the weight of a vehicle affects stopping distance?

Fully loaded trucks take longer to stop or the buses loaded with passengers take less distance than empty ones.

If brakes work the same no matter what the weight of the vehicle is for both trucks and buses.

Empty trucks take longer to stop than if loaded, but this is not the normal case for buses.

10. Stab braking should not be used on vehicles with:

Trailers

Antilock brakes

Hazardous materials

11. Which of these is true about notifying the authorites after an accident occurs?

An exact location is not necessary; just identify the road and the vehicles involved.

You should notify the authorities about an accident before doing anyting else.

If you have a cellular phone or CB radio you should notify the authorites before exiting the vehicle.

12. Which vehicle will have the most difficulties staying in its lane during a strong wind?

A double with an empty trailer

A tractor pulling a loaded flat bed trailer

A triple axle vehicle with cargo

13. The primary cause of fatal crashes is:

Driving at night.

Driving while eating.

Driving too fast.

14. Which of these is true about hauling of hazardous materials?

Cylinders with compressed gases should be transported under covers if there is no label on them.

Such a load should be marked with a four inches diamond shaped lables on the containers.

Such a load should be marked with a four inches circle red colored labels on the containers.

15. Which of these statements about brakes is true?

The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it.

Brakes have more stopping power when they get very hot.

Brake drums cool very quickly when the vehicle is moving very fast.

16. If you have been convicted of driving a commercial vehicle under the influence of alcohol or drugs you will loose your CDL for:

6 months

1 year

2 year

17. When driving in cold weather your tire tread should:

Provide enough touch into steer and push the vehicle through snow.

Be double the depth required in normal weather.

Be checked every one hundred miles or every 2 hours.

18. What should you do if a car is coming toward you at night and keeps its high beams on?

Flash your high beams quickly at the other driver

Look to the right lane or edge markings of the road

slow down and look stright ahead in your lane.

19. You are checking your tires for a pre-trip inspection. Which of these statements is true?

Tires of mismatched sizes should not be used together in the same vehicle

Radial and bias-ply tires can be used together on the same vehicle

2/23 inch tread depth is safe for fron tires.

20. Controlled braking:

Can be used when you are turning sharply

Involves locking the wheels for short periods of time.

Is used to keep a vehicle in a straight line when braking.

21. What is the best advice for driver when a heavy fog occurs?

Do not drive too slowly or other drivers may hit you.

Park the truck until the fog disappears.

Alternate you own high beams to improve your vision.

22. Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?

Pumping the brake pedal may bring the pressure up so you can stop the vehicle.

The parking brake will not work either because it is a part of the hydraulic system.

Shifting into neutral will help to slow the vehicle.

23. Why your vehicle speed naturally increases on a downgrade?

Gravity

The engine runs smoother

Lack of traction

24. If your brakes fail on a downgrade, you must first:

Look outside your vehicle for another means of slowing you.

Hit some object in order to stop your vehicle.

Find an escape ramp in order to exit the roadway.

25. While driving, ice builds up on your wipers and they no longer clean the windshield. You should:

Keep driving, and turn your defroster on.

Keep driving and spray the windshield with washer fluid.

Stop safely and fix the problem.

26. Which of these actions are NOT recommended for a left turn?

Start at the inside lane and swing right as you turn.

Use a right hand turn lane if there are two turning lanes.

Start your turn in the center of the intersection.

27. If you have a heavy load that slowing you down on an upgrade you should:

Shifting to the lower gear

exit the road until traffic is lighter.

drive on a shoulder so that others can pass your vehicle

28. Implied consent means:

You are giving your consent to inspect your vehicle for alcohol.

It is understood that you may drink alcohol now and then.

You are given your consent to be tested for alcohol in your blood.

29. The bridge formula:

Permits less maximum axle weight for the axles that are close together.

Permits less maximum axle weight for the axles that are far apart.

Permits the same maximum axle weight for any style.

30. Which of these is true about commercial vehicle habit of swinging wide on turns?

Off-tracking

Wide rounding

Side winding

31. If you are not sure what to use to put out the hazardous material fire you should:

Wait for fire fighters

Use water

Use dirt.

32. Which of these statements about downshifting is true?

When you downshift for a curve, you should do so before you enter the curve.

When you downshift for a hill, you should do so after you start down the hill.

When double-clutching, you should let the rpms decrease while the clutch is released and the shift lever is in neutral.

33. Merging to the road is safest if you:

wait for a large enough gap in the traffic to enter the road.

Bend over into the nearest lane so the other vehicles will give you room.

Gain speed on the shoulder and then merge.

34. Which of these statements about drugs is true?

A driver can use any prescription drug while driving.

Amphetamine (pep pills or bennies) can be used to help the driver stay alert.

Use of drugs can lead to an accident and/or arrest.

35. Which of these is true about the use of drugs while driving?

Prescription or non-prescription drugs are allowed at any time of driving.

Use of amphetamine is allowed if you are using this drug to stay alert.

Prescription drugs are allowed if a doctor says they will not affect the driving ability.

36. A space to the _____ your vehicle is most important to manage.

Back of

Front of.

To the side of.

37. Which of these is a good thing to do when driving at night?

Keep your speed low enough that you can stop within the range of your headlights.

Look directly at the oncoming headlights only briefly

Keep your instrument lights bright

38. Which of these is NOT part of the pre-trip inspection of the engine compartment?

valve clearance.

Engine oil level.

Worn electrical wiring insulation

39. Hydroplaning:

Only occurs when there is a lot of water

Cannot occur when driving through a puddle

Is more likely if tire pressure is low.

40. The distance that you should look ahead of your vehicle while driving is about _____ at low speed.

1 block

2 blocks

1/2 blocks

41. If your vehicle catches fire while you are driving, you should:

Park in an open area.

Park where a building or trees shelter your vehicle from the wind.

Increase your speed to put out the flames.

42. Why it is important to shift gears correctly?

To keep control of the vehicle

to keep the engine warm

to keep the engine oil flowing

43. What should you do when you see a hazard in the roadway ahead of you?

Steer around it and get back in your lane.

Stop quickly and pull to the side of the road.

Use your four-way flashers or brake lights to warn others.

44. Controlled braking is:

Slamming on the brakes hard and making the wheels lock up.

Squeezing the brakes firmly without locking them up.

Pressing brakes until wheel lock-up occurs, releasing and then applying.

45. Brake drums (or discs) must not have cracks longer than _____ the width of the friction area.

1/2.

1/3.

1/10.

46. Trucks and buses are subjects of certain law regulations and inspections. Which of these is true?

County and city laws do not apply to trucks and buses engaged into interstate commerce.

Federal regulations apply only to trucks and buses driven at least 50 mph

Laws and restrictions can vary from place to place

47. Communication means:

Talking with law enforcement officers.

To communicate your intention to other motorists.

To talk on the CB radio.

48. You must stop on a hill or curve on a two-lane two-way road. How far should you place the reflective triangles

As far back as necessary so others can see you.

Within 200 feet behind you.

Within 500 feet behind you.

49. Which of these statements about cold weather driving is true?

An engine can overheat when the weather is very cold.

Windshield antifreeze should be used.

Exhaust system leaks are less dangerous in cold weather.

50. Which of the statements is true about rear drive wheel braking skid?

Locked wheels usually have more traction than rolling wheels

Front wheels slide sideway to try to catch up with the rear wheels

On a vehicle with a trailer the trailer can push the towing vehicle sideways.

Enter your text here

Time is Up!

Login