Practice Test Geeks(CLP) Commercial Learner's Permit Practice Test
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Basic Vehicle Control Flashcards

7 cards from real CLP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Basic Vehicle Control flashcards as text

  1. When backing a commercial vehicle, you should primarily steer using which technique?

    Answer: Steer opposite to trailer movement

    When backing, you steer the front of the tractor opposite to the direction you want the trailer to move.

  2. What is the correct way to use the clutch when starting a large commercial vehicle on a flat road?

    Answer: Slip it slightly while applying moderate throttle

    Slipping the clutch slightly while applying moderate throttle allows a smooth start without stalling or jerking.

  3. When driving a commercial vehicle, what is the primary purpose of the trailer brake hand valve (trolley valve)?

    Answer: To test trailer brakes and assist with parking

    The trailer brake hand valve is used to test trailer brakes and to help control trailer sway, not for normal driving stops.

  4. Which gear should a driver use when going down a long, steep grade?

    Answer: A low gear that keeps engine speed in a safe range

    You should select a low gear before starting downhill so engine braking helps control speed without overheating the brakes.

  5. What does it mean when the low air pressure warning device activates in a commercial vehicle?

    Answer: Air pressure has dropped below a safe level (typically 60 psi)

    The low air pressure warning activates when system pressure falls to around 60 psi, signaling you must stop safely and address the problem.

  6. When making a right turn in a large commercial vehicle, why should you position the truck slightly left before turning?

    Answer: To allow the rear wheels enough room to complete the turn without hitting the curb

    Off-tracking causes rear wheels to follow a shorter path than the front, so swinging left provides clearance for the trailer's rear axle.

  7. What is 'off-tracking' in commercial vehicle operation?

    Answer: When the rear wheels follow a different, shorter path than the front wheels on a curve

    Off-tracking occurs when rear wheels of a long vehicle cut inside the path of the front wheels on turns, creating a risk of running over curbs or pedestrians.