In-vehicle workload assessment: effects of traffic situations and cellular telephone use

Journal of Safety Research
Bor-Shong Liu, Yung-Hui Lee

Abstract

Assessment of drivers' on-road workload is an important traffic safety consideration. This study was conducted to examine the effects of cellular phone communication on driving performance, with particular emphasis on variations in task demand in different traffic situations. Twelve participants were asked to drive on urban roads and motorways with or without concomitant mathematical-addition tests relayed via cellular phone. Measurements included task and driving performance, physiological responses, and compensatory behavior. Analysis of task performance revealed that mean response time was markedly increased (11.9%) for driving on urban roads compared to motorways. The mean driving speed only decreased 5.8% in the presence of phone tasks in comparison to normal driving without distractions. In addition, overall physiological workload increased through compensatory behavior in response to the phone tasks. Driving with phone use in different traffic environments induced measurable variations in driver workload. When faced with heavy traffic, a greater safety margin is typically adopted, with more lowered driving speed and restricted phone use, and it can be assumed that there is a general trade-off between tasks to preserve dr...Continue Reading

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Citations

Apr 25, 2013·Accident; Analysis and Prevention·Noam TractinskyDavid Shinar
Oct 7, 2008·Traffic Injury Prevention·Michel PicardMarc Simard
Nov 10, 2012·Traffic Injury Prevention·Sumie LeungRaymond J McKenzie
Jul 10, 2009·Behavior Research Methods·Antoine ClarionChristian Collet
May 13, 2009·Journal of Safety Research·Yoko Ishigami, Raymond M Klein
Sep 2, 2008·Accident; Analysis and Prevention·Shun-Hui ChangJi-Liang Doong
Jul 9, 2008·Accident; Analysis and Prevention·Jeff K CairdChip Scialfa
Oct 4, 2008·Journal of Physiological Anthropology·Yoshihiro ShimomuraTetsuo Katsuura
Nov 21, 2013·Accident; Analysis and Prevention·Tova Rosenbloom, Ehud Eldror
Dec 19, 2014·Frontiers in Psychology·Julie PaxionCatherine Berthelon

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