Abstract

The aim of this study was to characterize the behavior of older people when intercepting a moving gap, with reference to that produced by younger people. Participants were asked to intercept a moving inter-vehicular space within a train of vehicles, by modulating their speed if necessary. Five initial distances to the interception location were manipulated (Offset), without the knowledge of the participants, requiring distinct speed regulations. The analyses focused on displacements kinematics as well as on the associated visual information taking strategies. The results indicate several similarities in the behaviors produced by two populations. Functional speed regulations are initiated early and persist until the interception. These regulations allow for safe interception. The visual strategies deployed by the older participants are also relatively close to those of the younger participants, with the main areas of interest located on the vehicles located upstream of the interval. The results also reveal differences between the two populations. The regulations produced by older drivers are initiated late in negative Offset giving rise to some extent to unsafe behavior. These results are discussed in relation to the decrease in motion detection thresholds with age. Our dataset could be particularly useful in view of the design of driver assistance systems for older drivers.

摘要

本研究的目的是描述老年人在截取移动间隙时的行为，参考年轻人产生的行为。参与者被要求拦截一列车辆中移动的车间空间，必要时通过调节速度。在参与者不知情的情况下，操纵了到拦截位置的五个初始距离（偏移），需要不同的速度规则。分析侧重于位移运动学以及相关的视觉信息获取策略。结果表明两个群体产生的行为有几个相似之处。功能性速度规则尽早启动并持续到拦截。这些规定允许安全拦截。年长参与者部署的视觉策略也相对接近年轻参与者，主要兴趣区域位于区间上游的车辆上。结果还揭示了两个人群之间的差异。年长司机制定的法规在负偏移量下启动较晚，在一定程度上引起了不安全行为。讨论这些结果与运动检测阈值随年龄的下降有关。鉴于为老年驾驶员设计驾驶员辅助系统，我们的数据集可能特别有用。年长司机制定的法规在负偏移量下启动较晚，在一定程度上引起了不安全行为。讨论这些结果与运动检测阈值随年龄的下降有关。鉴于为老年驾驶员设计驾驶员辅助系统，我们的数据集可能特别有用。年长司机制定的法规在负偏移量下启动较晚，在一定程度上引起了不安全行为。讨论这些结果与运动检测阈值随年龄的下降有关。鉴于为老年驾驶员设计驾驶员辅助系统，我们的数据集可能特别有用。