CDL Permit Quiz

General Knowledge 6 CDL Test Alabama
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1. When you are driving on grades, which of these is the best way to choose a safe speed?
  • Based on your vehicle and its cargo, select a safe speed that is within the posted speed.

  • Follow the vehicle in front of you.

  • If you have a light load, you can go faster than those with a heavy load.

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2. You are driving in an area with few streetlights on a clear right. If you cannot see well with your headlights, which of the actions would help?
  • Find another route that is better lit, even if it is out of the way.

  • Turn your interior lights on and adjust your instrument lights up.

  • Use your high beams when legal and keep your interior lights off.

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3. Turn signals should be used:
  • At least 100 feet before turning or changing lane.

  • At least 150 feet before turning or changing Blane.

  • At least 200 feet before turning or changing lane.

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4. One can recognize hazardous materials by looking at the container _______.
  • label

  • shape

  • color

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5. 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 lower gear than you would use to climb the hill.

  • A higher gear than you would use to climb the hill.

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6. Merging onto a road is safest if you:
  • Wait for a large enough gap in traffic to enter the road.

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

  • Gain speed on the shoulder and then merge.

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7. Truck escape ramps:
  • Help avoid damage to vehicles.

  • Cannot be used by certain types of heavy vehicles.

  • Are not for buses.

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8. You are driving on a straight level highway at 50 mph. There are no vehicles in front of you. Suddenly, a tire blows out on your vehicle. What should you do first?
  • Stay off the brake until the vehicle has slowed down.

  • Begin light braking.

  • Begin emergency braking.

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9. Which of the following systems should receive extra attention during winter weather inspection?
  • Suspension.

  • Exhaust.

  • Steering.

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10. You are driving in a steady rain. A good indication that hydroplaning can occur is when:
  • The roadway surface is new.

  • The vehicle in front of you creates water splashes.

  • You cannot see raindrops on the roadway surfaces.

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11. Which of these rigs have more chances to off- track while making turn?
  • Triple with 45-feet trailer.

  • Tractor with two 27-feet trailers.

  • 53-feet straight truck.

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12. One reason that dry bulk tanks require special care is:
  • The load can shift.

  • They can easily catch fire.

  • They can only be filled halfway.

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13. Most serious skid results from:
  • Driving too fast for conditions.

  • Turning too sharply.

  • An uneven load.

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14. Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?
  • You can almost always turn to miss an obstacle more quickly than you can stop.

  • Stopping is always the safest action in a traffic emergency.

  • Leaving the road is always more risky than hitting another vehicle.

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15. You are driving heavy vehicle and the road surface became slippery due to the rain. What you should do?
  • Decrease your speed even further for adverse weather.

  • Adjust your speed to traffic.

  • Turn off your 4-way flashers.

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16. You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do?
  • Downshift and pump the brake pedal.

  • Look for an escape ramp or escape route.

  • Both of the above.

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17. You must drive on a slippery road. Which of these is a good thing to do in such a situation?
  • Use a smaller following distance.

  • Apply the brakes while on curves.

  • Slow down gradually.

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18. When you are parked at the side of the road at night, you must:
  • Turn on your 4-way emergency flashers to warn others.

  • Put out your emergency warning lights within 30 minutes.

  • Use your taillights to give warning to other drivers.

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19. What should you do if a car coming toward you at night keeps its high beams on?
  • Flash your high beams quickly driver. at the other.

  • Look to the right lane or edge markings of the road.

  • Slow down and look straight ahead in your lane.

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20. Which of these is NOT part of the pre-trip inspection of the engine compartment?
  • Valve clearance.

  • Engine oil level.

  • Worn electrical wiring insulation.

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21. If you are forced to return to the road before stopping on the shoulder, the best procedure is:
  • Using mirrors and turn signals, edge gradually back on the road.

  • Using mirrors and turn signals, turn sharply to get back on the road.

  • Drive on the shoulder to the next exit and then re-enter the road.

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22. Cargo inspection:
  • Is most often not the responsibility of the driver.

  • Should be performed after every break you take while driving.

  • Are needed only if hazardous materials are being hauled.

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23. Which of these statements about a pre-trip inspection is true?
  • If parked on a street, you should walk so that you face away from an oncoming traffic.

  • Leave the key in the ignition so you do not loose it while you are under the truck.

  • If you need to tilt the cab, secure loose things so they do not fall and break anything.

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24. If you are being tailgated, you should:
  • Increase your following distance.

  • Flash your brake lights.

  • Signal the tailgater when it is safe to pass you.

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25. Can state inspectors inspect your truck or bus?
  • No.

  • Yes, but they cannot put it out of service.

  • Yes, and they can put it out out of service if it is unsafe.

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26. After starting the engine:
  • The coolant temperature gauge should begin a gradual rise to normal.

  • The oil pressure gauge should take 3 -5 minutes to rise to normal.

  • The engine temperature gauge will take 3 - 5 minutes to rise to normal.

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27. You are approaching a traffic light that has been green for a long time. What is the best approach?
  • Continue at your current speed and see if the light changes.

  • Accelerate to make sure you get through the light.

  • Start slowing down so you will be ready to stop.

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28. Which of these is a good thing to do when driving at night?
  • Keep your speed slow enough that you can stop within the range of your headlights.

  • Look directly at oncoming headlights only briefly.

  • Keep your instrument lights bright.

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29. Which of these is NOT a proper use of vehicle lights?
  • Turning on your headlights during the day when visibility is reduced due to rain or snow.

  • Flashing your brake lights to warn someone behind you that are slowing down.

  • Flashing your brake light to get someone off your tail.

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30. Which of these statements about inspection of the suspension components is true?
  • Distorted coil springs are safe as long as they are not broken.

  • Axle mounts should be checked at each point where they are secured on the vehicle frame and axle.

  • Suspension components should be checked at all axles, except for the power unit.

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31. Which of these is NOT a brake check you normally do during your walk-around inspection?
  • Brake adjustment.

  • Conditions of hoses.

  • Hydraulic brake cylinders leaks.

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32. Which of these statements about staying alert to drive is true?
  • A half-hour break for coffee will do more to keep you alert than a half-hour nap.

  • If you must stop to take a nap, it should be at a truck stop or other rest area, never on the side of the road.

  • Sleep is the only thing that can overcome fatigue.

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33. You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?
  • It may be a slow-moving vehicle.

  • The vehicle is hauling hazardous materials.

  • It is being driven by a student driver

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34. The total weight of a powered unit, the trailer, and the cargo is called:
  • Gross combination weight.

  • Gross vehicle weight.

  • Gross axle weight.

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35. You should always turn on your 4-way emergency flashers when you:
  • Drive through the mountains.

  • Park on the side of the road.

  • Cross railroad tracks.

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36. It is unsafe to operate a vehicle with how many cracked, broken or missing spring leaves in any leaf spring:
  • One-third of the total number

  • One-half of the total number

  • One-fourth of the total number

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37. To prevent brake "fade", you should:
  • Coast down hills that are not very steep inclines.

  • Apply constant hard pressure on the brakes when driving down hills.

  • Select a gear, which will keep your vehicle to a safe speed on the deep downgrade.

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38. You wish to turn right from one two-lane, two- way street to another. Your vehicle is so long that you must swing wide to make the turn.
  • You should swing wide when you begin the turn.

  • You should swing wide when you complete the thurn.

  • You should not make a turn. Drive straight to the appropriate intersection.

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39. When driving on roads where truck speed limits are less than cars, you should:
  • Be extra careful when changing lanes.

  • Adjust your speed to speed of other trucks and buses.

  • Adjust your speed to the other cars.

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40. Why your vehicle's speed naturally increases on a downgrade?
  • Gravity.

  • The engine runs smoother.

  • Lack of traction.

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41. If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02 you will:
  • Be placed out of service for 72 hours.

  • Be in deep trouble with your dispatcher.

  • Be placed out of service for 24 hours.

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42. Your vehicle's outside mirrors should be adjusted in a way that:
  • You do not have a blind spot.

  • Some part of the vehicle is showing.

  • You can see your entire vehicle.

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43. Which of these statements about overhead clearance is true?
  • You should assume posted clearance signs are correct.

  • The weight of a vehicle changes its height.

  • If the road surface causes your vehicle to tilt toward objects at the edge of the road, you should drive close to the shoulder.

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44. Which of these is true about tire pressure?
  • Air pressure in tires increases with the temperature.

  • Air should be let out of hot tires so the tires do not blow out.

  • Tire pressure need not be checked during a trip if it passed pre-trip inspection.

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45. Which of the statement is true?
  • Most people are more alert at night than during the day.

  • Most hazards are easier to see at night than during the day.

  • Many heavy vehicles accidents occur between midnight and 6 a.m.

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46. Which of these is true about rear drive wheel braking skids?
  • 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.

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47. If you must use a cell phone while you are driving, you should:
  • Reduce your speed.

  • Pull off the road onto a safe and legal position.

  • Position the phone so you can drive and see the road in front of you.

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48. What three distances add up the total stopping distance for your truck or bus?
  • Attention distance, reaction distance, slowing distance.

  • Observation distance, respond distance, braking distance.

  • Perception distance, reaction distance, braking distance.

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49. Which of these statements about driving in areas with strong wind is true?
  • You should drive alongside other vehicles to help break up the wind.

  • The lighter your vehicle, the less trouble you will have with the wind.

  • Winds are especially a problem when coming out of tunnels.

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50. How do you correct a rear-wheel acceleration skid?
  • Apply more power to the wheels.

  • Stop accelerating.

  • Downshift.

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