@article{ref1,
title="Effects of constant and non-constant velocity motion on judgments of collision-avoidance action gap",
journal="Proceedings of the Human Factors and Ergonomic Society annual meeting",
year="2009",
author="Tharanathan, Anand",
volume="53",
number="23",
pages="1762-1765",
abstract="Twenty-five percent of traffic accidents are rear-end collisions. An important factor that may contribute toward such collisions is the collision-avoidance action gap. Prior studies have failed to investigate the factors that affect judgments of collision-avoidance action gap. However, findings from prior research indicate that observers are typically poor in making time-to-contact judgments when a scene depicts non-constant velocity motion compared with constant velocity motion. Therefore, the primary purpose of this study was to investigate differences in judgments of collision-avoidance action gap during constant and non-constant velocity motion. In addition, the effects of starting headway, viewing condition and gap closure rate on such judgments were studied. Results indicated that judgments of collision-avoidance action gap were relatively poor during non-constant velocity motion compared with constant velocity motion. Also, the pattern of results for viewing condition and gap closure rate were consistent with prior studies on time-to-contact judgments. Implications of the findings for the design of intelligent collision-avoidance warning systems have been discussed.<p /><p>Language: en</p>",
language="en",
issn="2169-5067",
doi="10.1177/154193120905302304",
url="http://dx.doi.org/10.1177/154193120905302304"
}