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Speed and Following Distance Flashcards

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

Read the first 7 Speed and Following Distance flashcards as text

  1. In the Hazard Perception Test, why is traveling too fast a key factor in failing to respond to a developing hazard?

    Answer: It reduces the time and distance available to react safely

    Higher speed compresses the time window a driver has to identify and respond to a hazard, making a safe stop or avoidance maneuver much harder.

  2. What is the standard recommended following distance rule for normal dry road conditions in the US?

    Answer: The 2-second rule

    The 2-second rule ensures a driver maintains enough space to react and stop if the vehicle ahead brakes suddenly under normal conditions.

  3. When following a large truck on a highway, you should increase your following distance primarily because:

    Answer: Large trucks have longer stopping distances and block your forward view

    Trucks take significantly longer to stop than cars, and their size blocks your view of hazards ahead, requiring extra following distance.

  4. In a hazard perception scenario, a car ahead brakes suddenly. Which factor most directly affects whether you can stop in time?

    Answer: Your following distance and current speed

    Stopping distance is determined by reaction distance plus braking distance, both of which increase with speed and decrease with greater following distance.

  5. If you double your speed from 30 mph to 60 mph, approximately how does your stopping distance change?

    Answer: It quadruples

    Braking distance increases with the square of speed, so doubling speed roughly quadruples the braking distance needed.

  6. In wet road conditions, the recommended following distance should be:

    Answer: At least doubled compared to dry conditions

    Wet roads significantly reduce tire grip and increase stopping distances, so the safe gap must be at least doubled.

  7. A driver notices a child's ball rolling into the road ahead. At 40 mph with a 1-second following distance, the most likely outcome is:

    Answer: Insufficient time to stop before a potential child follows the ball

    At 40 mph with only 1 second of following distance, the reaction and braking distance needed far exceeds the available space, making a collision with a following child very likely.