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A study on the width of tactile guiding lines to assist blind pedestrians in crossing intersections

协助盲人行人过路口触觉引导线宽度的研究

基本信息

批准号：
16510121
负责人：
OHKURA Motohiro
金额：
$ 1.79万
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：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16510121/
关键词：
vision impaired tactile guiding line optimum width barrier-free

项目摘要

Tactile guiding lines (TGLs) developed in order to assist blind independent pedestrians in crossing intersections have come into widespread use in Japan. The TGLs are a kind of tactile marker placed on the asphalt pavement of a crosswalk. The aim of the study was to collect fundamental data concerning the specifications of TGLs. The findings of the research were as follows ;1)A field experiment was done to determine the optimum width of TGLs. Seventeen blindfolded sighted subjects were asked to walk along the TGLs with different widths, 30,40,50 and 60cm. Performance and impressions by the subjects suggested that the width of TGLs was necessary to be greater than 40cm.2)Longitudinal raised lines newly added to the TGL on pedestrian crossing were evaluated for their effects on detectability either by cane or foot. Eight blind persons participated in a field experiment. The results suggested that the longitudinal lines helped blind pedestrians to keep the direction of travel while they follow tactile guiding indicator on the pedestrian crosswalk.3)The effect of ambient sound conditions on the performance of blindfolded pedestrians to judge direction while walking in a straight line was tested. Experiments revealed that exposure to ambient sound had the effect of causing subjects to veer significantly from their paths in a direction that was opposite to the source of the sound. Veering from the path was directly proportional to intensity of the ambient sound.

触觉引导线（TGL）的开发，以帮助盲人独立行人通过交叉口已在日本得到广泛使用。TGL是一种放置在人行横道沥青路面上的触觉标记。该研究的目的是收集有关TGL规格的基础数据。主要研究结果如下：1）通过田间试验确定了玉米秸秆还田的最佳宽度。17名被试被要求沿着30、40、50和60 cm宽的TGL行走。实验结果表明，TGL的宽度应大于40 cm。2）研究了TGL中新增的纵向凸起线对行人过街的感知能力的影响。8名盲人参加了一项实地实验。研究结果表明，在人行横道上设置纵向引导线有助于盲人行人在跟随触觉引导指示器时保持方向性。3）测试了环境声条件对盲人行人直线行走时方向判断能力的影响。实验表明，暴露在环境声音中会使受试者明显偏离他们的路径，向与声源相反的方向移动。从路径的转向与环境声音的强度成正比。