ACTAR Human Factors 2

Question 1

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

Accepted Answer

0.75 seconds

Answer

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

Question 2

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

Accepted Answer

Emotion is not part of PIEV

Answer

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

Question 3

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

Accepted Answer

Blood alcohol concentration above 0.08%

Answer

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

Question 4

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

Accepted Answer

132 feet

Answer

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

Question 5

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

Accepted Answer

Target fixation (moth effect)

Answer

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.

(ACTAR) Accreditation Commission for Traffic Accident Reconstructionist Practice Test

(ACTAR) Accreditation Commission for Traffic Accident Reconstructionist Practice Test

ACTAR Human Factors 2