Evaluation of dropped curbs and tactile walking surface indicators as direction clues at the pedestrian crosswalk for vision impaired pedestrians

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  • 横断歩道口における縁石と点字ブロックの敷設状況及び視覚障害者による道路横断時の方向手がかりとしての評価
  • オウダン ホドウグチ ニ オケル エンセキ ト テンジ ブロック ノ フセツ ジョウキョウ オヨビ シカク ショウガイシャ ニ ヨル ドウロ オウダンジ ノ ホウコウ テガカリ ト シテノ ヒョウカ

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It is essential for vision impaired persons traveling alone to take direction by using a certain clue prior to crossing a pedestrian crosswalk. Although dropped curbs and tactile guiding tiles are used as important clues for direction taking, the reliability of them is not elaborated yet. For this reason we evaluated these clues at 309 crosswalk entrances in three different cities. As a result, as much as 65% of the dropped curbs were identified to have oblique orientation to the line of direction, thus leading pedestrians to the edge or outside of crosswalk. Ninety seven percent of the crosswalk entrances had the guiding tiles, and 19% of them were not parallel to the line of direction, 12% of them had distance less than 60 cm, and one % of them showed two deflections within a guiding pathway. These features make vision impaired pedestrians extremely difficult to take exact line of direction. In conclusion, to use the dropped curb for direction taking seems to be dangerous and the guiding pathway has many inconveniences for direction taking.

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