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Steven M. Kiger

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Publications by Steven M. Kiger (bibliography)

1995

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Kiger, Steven M., Rockwell, Thomas H. and Tijerina, Louis (1995): Developing Baseline Data on Heavy Vehicle Driver Visual Workload. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 1112-1116.

“This study focused on the development of baseline measures of driver visual allocation under normal operating conditions. Thirty licensed truck drivers drove an instrumented heavy truck over a 459 km fixed route in which road type and ambient lighting condition were varied. An on-board video recording system was used to record the subject's visual glances throughout the run. During the run subjects performed three driving tasks: open road driving, car following and in-cab tasks requested by the experimenter. Over all conditions, the mean time off the road was 1.01 s and the mean road scene glance duration was 2.18 s. The results indicated that road type and driving task were significant factors affecting driver visual workload indicators. Ambient light level was not a significant factor affecting the visual allocation of truck drivers.”

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Tijerina, Louis, Kiger, Steven M., Rockwell, Thomas H. and Tornow, Carina (1995): Workload Assessment of In-Cab Text Message System and Cellular Phone Use by Heavy Vehicle Drivers on the Road. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 1117-1121.

“This study assessed the driver workload imposed by a text messaging system and cellular phone on heavy vehicle drivers under various driving conditions. Sixteen (16) professional commercial vehicle operation (CVO) licensed drivers drove an instrumented heavy truck over a 4-hour period on public roads under various conditions of ambient lighting (day or night), traffic density (light or heavy), and road type (divided or undivided). Within driving condition combinations, various levels of text message reading, cellular phone dialing, radio tuning, and communications dialogue were completed by the driver. Continuous measures were taken of visual allocation, steering and accelerator activity, speed maintenance and lane-keeping performance. Results of in-vehicle device use are presented and provide insights into useful workload measures and methods, as well as a contribution to the literature on cellular phone and in-vehicle text messaging system ergonomics.”

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