Driving performance after an extended period of travel in an automated highway system
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1998-04-01
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Edition:Final working paper
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Abstract:The objective of this experiment -- part of a series exploring human factors issues related to the Automated Highway System (AHS)-was to determine whether driving performance would be affected by extended travel under automated control at a velocity higher than the speed limit and closer to the vehicles ahead than usual. The experiment, conducted in the Iowa Driving Simulator, used a generic AHS con@tration in which the left lane was reserved for automated vehicles. Unautomated vehicles traveled in the center and right lanes, the center lane was not a dedicated transition lane, and there were no barriers between the automated and unautomatcd lanes. Forty-eight drivers participated in the experiment -- half were male, half were female; half were between the ages of 25 and 34 years, half aged 65 or older. Lane-keeping, speed control, following distance, lane-change, and incursion measures were used to compare driving performance before and after the drivers had traveled under automated control.
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