DMV PA - CDL Doubles and Triples Endorsement Multiple Choice Test Questions

Card Set Information

Author:
Tibrious
ID:
2867
Filename:
DMV PA - CDL Doubles and Triples Endorsement Multiple Choice Test Questions
Updated:
2009-12-16 17:23:26
Tags:
Pennsylvania Department of Motor Vehicles; DMV; Commercial Drivers License; CDL; Doubles and Triples;Doubles; Triples; Endorsement; Doubles and Triples Test; Multiple Choice
Folders:

Description:
Multiple Choice Test Questions (and answers,) for the Doubles and Triples Endorsement portion of the Commercial Drivers License Exam of Pennsylvania.
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Tibrious on FreezingBlue Flashcards. What would you like to do?


  1. 1. When pulling triple trailers, always put the heaviest trailer:

    a. In the front
    b. In the rear
    c. In the middle
    d. It doesn't make a difference
    a. In the front
  2. 2. When coupling twin trailers, you should release the dolly brakes by:

    a. Dropping the trailer onto the fifth wheel
    b. Opening the air tank petcock
    c. Letting the air out of the brake line
    d. Pushing the air release valve on the dash
    b. Opening the air tank petcock
  3. 3. When connecting the converter dolly to the rear trailer, you should remember to:

    a. Make sure trailer brakes are locked
    b. Make sure trailer height is correct
    c. Raise the landing gear slightly off the ground
    d. All of the above
    d. All of the above
  4. 4. When coupling the rear trailer, the correct trailer height is:

    a. Six inches of space between the upper and lower fifth wheel
    b. Slightly lower than the fifth wheel
    c. When the locking jaws are closed around the kingpin
    d. The kingpin touches the fifth wheel
    c. When the locking jaws are closed around the kingpin
  5. 5. To uncouple double trailers, you should park your rig:

    a. On a slight incline
    b. On level ground
    c. In the company parking lot
    d. On a soft surface
    b. On level ground
  6. 6. To uncouple the converter dolly you should:

    a. Disconnect safety chains, lower the landing gear, and chock the wheels
    b. Chock the wheels, lower the landing gear, and disconnect safety chains
    c. Lower the landing gear, disconnect safety chains, and chock the wheels
    d. Chock the wheels, disconnect safety chains, and lower the landing gears
    c. Lower the landing gear, disconnect safety chains, and chock the wheels
  7. 7. It is dangerous to unlock the pintle hook with the dolly still under the rear trailer because:

    a. The dolly tow bar may fly up
    b. The brakes might release
    c. The kingpin might break off
    d. The fifth wheel might not be aligned
    a. The dolly tow bar may fly up
  8. 8. When inspecting doubles, the shut off valves at the rear of the trailer should be:

    a. Open at the rear of the front trailer, open at the rear of the last trailer
    b. Open at the rear of the front trailer, closed at the rear of the last trailer
    c. Closed at the rear of the front trailer, closed at the rear of the last trailer
    d. None of the above
    b. Open at the rear of the front trailer, closed at the rear of the last trailer
  9. 9. To check for air flow to the last trailer:

    a. Pull forward and step on brake pedal
    b. Open emergency shut off valve and listen for escaping air
    c. Step on brake pedal and watch for brake lights
    d. Test emergency brake lines on level surface
    b. Open emergency shut off valve and listen for escaping air
  10. 10. You should test your tractor protection valve to avoid:

    a. The emergency brakes coming on due to loss of air
    b. The loss of air from the air hose
    c. The loss of air from your trailer brakes
    d. All of the above
    d. All of the above
  11. 11. To test the trailer service brakes you should:

    a. Lightly test brakes at 5 mph
    b. Apply hand control and check to see if you feel the trailer brakes come on
    c. Depress the brake pedal
    d. Release air to the brakes
    b. Apply hand control and check to see if you feel the trailer brakes come on
  12. 12. When pulling triple trailers, which unit is more likely to roll over:

    a. The front trailer
    b. The middle trailer
    c. The last trailer
    d. The tractor
    c. The last trailer
  13. 13. The stopping distance for a tractor trailer traveling 55 mph on dry pavement is:

    a. Longer than a football field, about 300 feet
    b. Two football fields, about 600 feet
    c. Two thirds of a football field, about 200 feet
    d. Half of a football field, about 150 feet
    a. Longer than a football field, about 300 feet
  14. 14. A drive-wheel skid when pulling doubles could result in a jackknife when:

    a. The tractor brakes lock up
    b. The trailer pushes the towed vehicle sideways
    c. The trailer slides off the right side of the road
    d. The tractor spins around
    b. The trailer pushes the towed vehicle sideways
  15. 15. When steering to avoid a crash while pulling doubles, remember to:

    a. Keep both hands on the steering wheel
    b. Stay off the brake while turning
    c. Be prepared to counter-steer
    d. All of the above
    d. All of the above
  16. 16. The stopping distance for a tractor trailer traveling 55 mph on dry pavement is:

    a. Longer than a football field, about 300 feet
    b. Two football fields, about 600 feet
    c. Two thirds of a football field, about 200 feet
    d. Half of a football field, about 150 feet
    a. Longer than a football field, about 300 feet
  17. 17. When coupling doubles, start by:

    a. Coupling the tractor to the second trailer
    b. Backing the converter dolly under the second trailer
    c. Coupling the converter tongue to the pintle hook on the first trailer
    d. Putting the second trailer against a dock
    b. Backing the converter dolly under the second trailer
  18. 18. Trucks with double or triple trailers:

    a. Have a dangerous 'crack the whip' affect
    b. Present a rearward amplification hazard
    c. Can turn over in response to abrupt steering movements
    d. All of the above
    d. All of the above
  19. 19. Inspect a converter dolly as if it were:

    a. A trailer
    b. Cargo
    c. An axle with a fifth wheel
    d. An engine
    c. An axle with a fifth wheel
  20. 20. To uncouple double trailers, you should park your rig:

    a. On a slight incline
    b. On level ground
    c. In the company parking lot
    d. On a soft surface
    b. On level ground
  21. 21. On trailers used as doubles and triples, you'll find shut off valves (cut off cocks) in the:

    a. Service air lines
    b. Emergency air lines
    c. Service and emergency air lines
    d. Parking brake system only
    c. Service and emergency air lines
  22. 22. It is dangerous to unlock the pintle hook with the dolly still under the rear trailer because:

    a. The dolly tow bar may fly up
    b. The brakes might release
    c. The kingpin might break off
    d. The fifth wheel might not be aligned
    a. The dolly tow bar may fly up
  23. 23. A drive-wheel skid when pulling doubles could result in a jackknife when:

    a. The tractor brakes lock up
    b. The trailer pushes the towed vehicle sideways
    c. The trailer slides off the right side of the road
    d. The tractor spins around
    b. The trailer pushes the towed vehicle sideways
  24. 24. To check for air flow to the last trailer:

    a. Pull forward and step on brake pedal
    b. Open emergency shut off valve and listen for escaping air
    c. Step on brake pedal and watch for brake lights
    d. Test emergency brake lines on level surface
    b. Open emergency shut off valve and listen for escaping air
  25. 25. You should test your tractor protection valve to avoid:

    a. The emergency brakes coming on due to loss of air
    b. The loss of air from the air hose
    c. The loss of air from your trailer brakes
    d. All of the above
    d. All of the above
  26. 26. To test the trailer service brakes you should:

    a. Lightly test brakes at 5 mph
    b. Apply hand control and check to see if you feel the trailer brakes come on
    c. Depress the brake pedal
    d. Release air to the brakes
    b. Apply hand control and check to see if you feel the trailer brakes come on
  27. 27. When pulling triple trailers, which unit is more likely to roll over?

    a. The front trailer
    b. The middle trailer
    c. The last trailer
    d. The tractor
    c. The last trailer
  28. 28. When pulling triple trailers, always put the heaviest trailer:

    a. In the front
    b. In the rear
    c. In the middle
    d. It doesn't make a difference
    a. In the front
  29. 29. When inspecting doubles, the shut off valves at the rear of the trailer should be:

    a. Open at the rear of front trailer, open at the rear of the last trailer
    b. Open at the rear of front trailer, closed at the rear of the last trailer
    c. Closed at the rear of front trailer, closed at the rear of the last trailer
    d. None of the above
    b. Open at the rear of front trailer, closed at the rear of the last trailer
  30. 30. When steering to avoid a crash while pulling doubles, remember to:

    a. Keep both hands on the steering wheel
    b. Stay off the brake while turning
    c. Be prepared to counter-steer
    d. All of the above
    d. All of the above
  31. 31. When coupling the rear trailer, the correct trailer height is:

    a. Six inches of space between the upper and lower fifth wheel
    b. Slightly lower than the fifth wheel
    c. When the locking jaws are closed around the kingpin
    d. The kingpin touches the fifth wheel
    c. When the locking jaws are closed around the kingpin
  32. 32. When connecting the converter dolly to the rear trailer, you should remember to:

    a. Make sure trailer brakes are locked
    b. Make sure trailer height is correct
    c. Raise the landing gear slightly off the ground
    d. All of the above
    d. All of the above
  33. 33. Should you unhook the pintle hook with the converter dolly still under a trailer?

    a. Yes, this is standard procedure
    b. Yes, this keeps the trailer from falling
    c. No, this could damage the pintle hook
    d. No, this could result in your injury
    d. No, this could result in your injury
  34. 34. When coupling twin trailers, you should release the dolly brakes by:

    a. Dropping the trailer onto the fifth wheel
    b. Opening the air tank petcock
    c. Letting the air out of the brake line
    d. Pushing the air release valve on the dash
    b. Opening the air tank petcock
  35. 35. To uncouple the converter dolly you should:

    a. Disconnect safety chains, lower the landing gear and chock the wheels
    b. Chock the wheels, lower the landing gear and disconnect safety chains
    c. Lower the landing gear, disconnect safety chains, and chock the wheels
    d. Chock the wheels, disconnect safety chains, and lower the landing gear
    c. Lower the landing gear, disconnect safety chains, and chock the wheels
  36. 36. When driving with more than one trailer, which trailer should be the first one behind the tractor?

    a. The lightest trailer
    b. The heaviest trailer
    c. The shortest trailer
    d. None of the above
    b. The heaviest trailer
  37. 37. You are driving a 100 foot twin trailer combination at 50 mph. The road is dry and the visibility is good. You should keep at least __ seconds of space ahead of you.

    a. 9
    b. 10
    c. 11
    d. 12
    c. 11
  38. 38. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. When you do this, you should hear:

    a. Air escape from the open valve
    b. The service brakes slowly move to the fully applied position
    c. The emergency line valve open and release air
    d. None of the above
    a. Air escape from the open valve
  39. 39. You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:

    a. Push the brake pedal as hard as you can and hold it there
    b. Use only the trailer brakes
    c. Use controlled or stab braking
    d. None of the above
    c. Use controlled or stab braking
  40. 40. Converter dollies:

    a. Have little braking power because they are small
    b. Often do not have spring brakes
    c. Usually need a glad hand converter
    d. All of the above
    b. Often do not have spring brakes
  41. 41. The crack the whip effect that troubles trucks with trailers. Which is most likely to tip over?

    a. The rear trailer
    b. A full trailer behind a truck
    c. The rear trailer of a triple
    d. Any trailer
    c. The rear trailer of a triple
  42. 42. You are doing a walk around inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _____.

    a. Open, latched
    b. Open, free
    c. Closed, latched
    d. Closed, free
    c. Closed, latched
  43. 43. When does the "driver's manual" advise disconnecting the steering axle brakes to help keep the rig straight?

    a. When the road is dry
    b. Any time you have to
    c. When the road is slippery
    d. Never
    d. Never
  44. 44. If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen?

    a. The dolly tow bar may fly up
    b. The air lines will rupture
    c. The trailer brakes will unlock
    d. Nothing, the weight of the truck will keep it in place
    a. The dolly tow bar may fly up
  45. 45. You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?

    a. It depends on the load
    b. None
    c. 1/2 to 3/4 of an inch
    d. 1/32 to 3/32 of an inch
    b. None
  46. 46. Which of these statements about quick steering movements and doubles/triples is true?

    a. Countersteering is easier with doubles/triples than with most other vehicles
    b. You should put on the brakes at the same time you perform quick steering movements
    c. Doubles/triples are no problem with a quick steering move
    d. Doubles/triples flip over from quick steering moves more easily than many other vehicles
    d. Doubles/triples flip over from quick steering moves more easily than many other vehicles
  47. 47. Empty trucks:

    a. May have poor traction due to bouncing and wheel lockup
    b. Stop in the same distance as a fully loaded one
    c. Require shorter stopping distances than full ones.
    d. Are the easiest to stop since there is no shifting cargo
    a. May have poor traction due to bouncing and wheel lockup
  48. 48. You are driving a 100 foot truck with double trailers at 30 mph. The road is dry. Visibility is good. You should keep at least __ seconds of space ahead of you:

    a. 9
    b. 10
    c. 11
    d. 12
    b. 10
  49. 49. If you want to couple a second trailer to your combination vehicle, secure it by using:

    a. The trailer's spring brakes and emergency air brakes
    b. Wheel chocks
    c. Either of the above, if available
    d. None of the above
    c. Either of the above, if available
  50. 50. The best way to stop all skids is to:

    a. Use stab or controlled braking
    b. Countersteer and accelerate
    c. Restore traction to the tires
    d. Steer and brake hard
    c. Restore traction to the tires
  51. 51. Driving a truck with double or triple trailers requires a driver to:

    a. Use special care in bad weather and mountain conditions
    b. Allow more following distance than for smaller vehicles
    c. Both A. and B.
    d. None of the above
    c. Both A. and B.
  52. 52. The best way to keep brakes from overheating while going down a steep grade is to:

    a. Use stab braking
    b. Use only the trailer brakes
    c. Use countersteering practices
    d. Go 5 m.p.h. below your safe speed
    d. Go 5 m.p.h. below your safe speed
  53. 53. If you must drive through deep puddles or flowing water, which of these should you not do?

    a. Drive through quickly
    b. Use a lower gear
    c. Increase engine RPM
    d. Take advantage of the water and let it wash off your tires etc.
    a. Drive through quickly
  54. 54. Some large trucks have convex or "spot" mirrors which:

    a. Make things look smaller and farther away than they really are
    b. Do not need to be checked as often as flat mirrors because they show a larger area
    c. Are against the law in most states
    d. Make things look larger and closer than they really are
    a. Make things look smaller and farther away than they really are
  55. 55. Which of these statements about seeing ahead is true?

    a. At highway speed, you should look up to 1/4 mile ahead of your truck
    b. Many drivers do not look far enough ahead of their truck
    c. Good drivers shift their attention back and forth, near and far
    d. All of the above are true
    d. All of the above are true
  56. 56. When should you check your mirrors while making a lane change?

    a. After signaling the change
    b. Right after starting the lane change
    c. After completing the lane change
    d. All of the above
    d. All of the above
  57. 57. Which of these statements about managing space to the sides is true?

    a. Always keep your vehicle to the right side of your lane
    b. You should avoid traveling next to others when possible
    c. High winds are not a problem for doubles and triples
    d. All of the above
    b. You should avoid traveling next to others when possible
  58. 58. Which of these statements about handling of doubles and triples is true?

    a. The rear trailer of a 100 foot triple is less likely to turn over than a single semi trailer due to the crack the whip effect
    b. A triple bottom rig can stop quicker than a 5 axle tractor semi trailer due to off tracking
    c. A sudden movement with the steering wheel can result in a tipped over rear trailer
    d. None of the above
    c. A sudden movement with the steering wheel can result in a tipped over rear trailer
  59. 59. How can you be sure you supplied air to a second trailer?

    a. Go to the rear of the second trailer and open the emergency line shut off
    b. Watch each trailer's air gauge for a drop of 30 psi
    c. Apply the hand valve at 10 mph. You should stop in the same distance as a truck with one trailer at 5 mph.
    d. Get out and listen for air flowing through the lines
    a. Go to the rear of the second trailer and open the emergency line shut off
  60. 60. You should check the height of the trailer before connecting a converter dolly to a second or third trailer. The trailer height is right when:

    a. The trailer will be raised slightly when the converter dolly is backed under it.
    b. The kingpin rests on the fifth wheel
    c. The center of the kingpin lines up with the locking jaws
    d. All of the above
    a. The trailer will be raised slightly when the converter dolly is backed under it.
  61. 61. You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:

    a. Make sure the trailer will roll freely when coupling
    b. Hook the trailer electric cord to a portable generator for braking power.
    c. Supply air to the trailer air system with the tractor and then disconnect the emergency line
    d. Couple the trailer to the tractor, everything is ok
    c. Supply air to the trailer air system with the tractor and then disconnect the emergency line
  62. 62. Which of these is not a good thing to do when driving on slippery roads?

    a. Use the engine brake or speed retarder
    b. Use a light touch on the accelerator and brake pedals
    c. Keep other traffic out of your side space
    d. None of the above
    a. Use the engine brake or speed retarder
  63. 63. Which of these will result in the best control on curves?

    a. There is really no need to slow down for a curve
    b. Downshift after you enter the curve
    c. Braking during the turn
    d. Slowing to a safe speed before entering the curve, then accelerate slightly during the curve
    d. Slowing to a safe speed before entering the curve, then accelerate slightly during the curve
  64. 64. You are driving a set of doubles. A set of trailer wheels goes into a skid. Which of these is most likely to occur?

    a. The rig will continue to move in a straight line no matter how much the steering wheel is turned.
    b. You will have a trailer jackknife
    c. The rig will stay in a straight line but slide sideways
    d. None of the above
    b. You will have a trailer jackknife
  65. 65. Before you can supply air to the air tanks of a second trailer you need to:

    a. Open the shut off valves at the rear of the first trailer, and close the shut off valves at the rear of the second trailer
    b. Close the shut off valves at the rear of both trailers
    c. Open the shut off valves at the rear of both trailers
    d. None of the above
    a. Open the shut off valves at the rear of the first trailer, and close the shut off valves at the rear of the second trailer
  66. 66. Since March of 1998, trailers have been required to have yellow ABS malfunction lamps on the ____ side, either on the front or rear corner.

    a. Left
    b. Right
    c. Rear
    d. Center
    a. Left
  67. 67. Dollies manufactured on or after March 1, 1998, are required to have a lamp on the ____ side.

    a. Rear
    b. Center
    c. Left
    d. Right
    c. Left

What would you like to do?

Home > Flashcards > Print Preview