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A comprehensive research on ensuring safe intersection crossing by visually impaired pedestrians.

确保视障行人安全通过十字路口的综合研究。

基本信息

批准号：
21510160
负责人：
OHKURA Motohiro
金额：
$ 2.58万
依托单位：
Seikei University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2009
资助国家：
日本
起止时间：
2009 至 2011
项目状态：
已结题

项目摘要

The research comprised of three objectives. The first objective was to improve the durability of tactile guidance surfaces of truncated domes and to determine the height at which these surfaces need to be repaired. Three types of tactile guidance surfaces, all made from a polyurethane resin, with different hardness levels were installed on crosswalks in Matsuyama, the capital city of Ehime Prefecture. Longitudinal and repetitive measurements of the dome height suggested that the surfaces were more durable with decreasing hardness. This result was considered to be due to the fact that surfaces with lower hardness levels have higher elasticity, and thus can absorb forces from rolling tires of vehicles more effectively. The limit of detection by foot was 2 mm, suggesting that tactile guidance surfaces should be repaired prior to reaching this height.The second objective was to improve the accessibility of rotary intersections for visually impaired pedestrians. The rotary intersection in f … More ront of Mitaka station was redesigned due to poor performance results of independent crossing by visually impaired subjects in a previous field experiment. The crosswalk was reconstructed perpendicularly to the curb and new Braille tiles were installed on the sidewalk. A recent field experiment showed that the performance results of independent crossing were significantly improved.The third objective was to investigate whether the subsidiary task technique can be used to measure the psychological stress of visually impaired pedestrians. On-site testing was performed in-cooperation with a rehabilitation center in Ehime Prefecture. Trainees participating in the orientation and mobility training program were instructed to perform a subsidiary task while crossing a street independently. The subsidiary task involved pushing a hand-held switch every second at regular intervals. The trainees' performance on the subsidiary task while crossing improved as the training program progressed. The results indicated that it was possible to measure the psychological stress of visually impaired pedestrian using the subsidiary task technique. Less

这项研究包括三个目标。第一个目标是提高被截断的穹顶的触觉引导表面的耐用性，并确定这些表面需要修复的高度。爱贤县首府松山市的人行横道上安装了三种类型的触觉引导表面，它们都是由聚氨酯树脂制成的，硬度不同。对穹顶高度的纵向和重复测量表明，随着硬度的降低，表面更耐用。这一结果被认为是由于硬度水平较低的表面具有较高的弹性，因此可以更有效地吸收车辆滚动轮胎的力。徒步探测的极限是2毫米，建议在达到这个高度之前应该修复触觉引导表面。第二个目标是改善旋转十字路口对视障行人的可达性。F-…中的旋转交点由于视障受试者在之前的野外实验中独立穿越的成绩不佳，更多的三中车站的RONT被重新设计。人行横道垂直于路缘重建，并在人行道上安装了新的盲文瓷砖。最近的一项现场实验表明，独立过马路的成绩显著提高。第三个目标是探讨辅助任务技术是否可以用于测量视障行人的心理应激。现场测试是与爱美县的一家康复中心合作进行的。参加定向和行动训练计划的受训人员被指示在独立过马路时执行一项辅助任务。辅助任务包括每秒钟按一次手持开关，并有规律的间隔。随着训练计划的进展，受训者在辅助任务中的交叉成绩有所提高。结果表明，利用辅助任务技术测量视障行人的心理应激是可行的。较少