Practice Test Geeks(ACTAR) Accreditation Commission for Traffic Accident Reconstructionist Practice Test
← All ACTAR Flashcard Decks

Human Factors Flashcards

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

Read the first 7 Human Factors flashcards as text

  1. What is the typical simple reaction time for an alert, unimpaired driver responding to a single expected stimulus?

    Answer: 0.75 seconds

    Simple reaction time for an alert driver responding to a single expected stimulus is approximately 0.75 seconds (range ~0.5–1.0 s).

  2. In the PIEV model of driver response, what does the letter 'E' represent?

    Answer: Emotion is not part of PIEV

    PIEV stands for Perception, Intellection, Emotion (sometimes omitted), and Volition—some formulations drop Emotion, making it PIV or use PRT instead.

  3. Which factor most significantly degrades a driver's hazard perception capability?

    Answer: Blood alcohol concentration above 0.08%

    BAC above 0.08% substantially impairs hazard detection, tracking, and divided attention, making it the most significant degrader.

  4. A driver traveling at 60 mph with a perception-reaction time of 1.5 seconds will travel approximately how far before braking begins?

    Answer: 132 feet

    60 mph = 88 ft/s; 88 × 1.5 = 132 feet of PRT distance before braking commences.

  5. What phenomenon occurs when a driver fixates visually on a hazard and steers toward it instead of away?

    Answer: Target fixation (moth effect)

    Target fixation, sometimes called the moth effect, occurs when a driver steers toward an object they are fixating on rather than executing an avoidance path.

  6. Which of the following best describes 'inattentional blindness' in the context of traffic accident reconstruction?

    Answer: Failure to perceive a visible object when attention is directed elsewhere

    Inattentional blindness is the failure to notice a fully visible stimulus when attention is engaged by another task.

  7. How does workload-induced tunnel vision affect a driver's ability to detect peripheral hazards?

    Answer: It narrows the useful field of view, reducing peripheral hazard detection

    Under high cognitive workload or stress, the useful field of view (UFOV) contracts, reducing a driver's ability to detect hazards outside the central visual zone.