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. What does 'vehicle lean' indicate when a commercial driver feels it in a curve?

    Answer: The center of gravity is shifting and rollover risk is present

    Noticeable lean in a curve means the vehicle's center of gravity is shifting outward, significantly increasing the risk of a rollover.

  2. When operating a commercial vehicle on a banked curve, what effect does the bank have on vehicle stability?

    Answer: A properly banked curve increases stability by counteracting centrifugal force

    Road banking tilts the road surface inward toward the turn's center, helping counteract the outward centrifugal force on the vehicle.

  3. When should a driver use the jake brake (engine compression brake)?

    Answer: On long downgrades to control speed without overheating service brakes

    Engine compression brakes are ideal for long downhill grades because they slow the vehicle using engine resistance, preserving service brake life.

  4. What does the term 'vehicle tracking' refer to in CDL driving?

    Answer: How closely the rear wheels follow the path of the front wheels

    Vehicle tracking describes how well the rear wheels follow the front wheel path, which is critical for navigating narrow roads and intersections.

  5. A driver notices the truck is pulling to one side during braking. What is the most likely cause?

    Answer: Uneven brake adjustment or a dragging brake on one side

    Uneven braking force — caused by misadjusted or dragging brakes — pulls the vehicle toward the side with greater stopping force.

  6. What is the function of the 'glad hands' on a commercial vehicle combination?

    Answer: They connect the air supply and service brake lines between the tractor and trailer

    Glad hands are the air line couplings (service and emergency) that connect the tractor's air brake system to the trailer.

  7. What is the safest following distance for a commercial vehicle traveling at 55 mph under normal conditions?

    Answer: At least 1 second for every 10 feet of vehicle length

    Federal CDL guidelines recommend a minimum of one second per 10 feet of vehicle length, plus one additional second if over 40 mph.