Pedestrian guidance for visually-impaired persons is provided by guide and warning blocks, but more reliable guidance is possible by supplementing these with a system that can indicate position and direction to travel with sounds. Simple direct sound guidance can be provided where the passageways branch in complex ways, particularly in underground pedestrian passageways in front of urban railway stations. In 1993, the Yamaguchi Construction Work Office carried out a trial installation of a push-button operated voice guidance system in an underground passageway in front of the Yamaguchi Prefectural Office Building. It was a simple system that was inexpensive to install and placed no financial burden on those who used it. It was praised by users who reported, for example, that "It is extremely easy to understand the sound system used in conjunction with the guide and warning blocks. I could walk there without anxiety." They also pointed out unresolved problems; it took a long time to find the buttons, for example. So when planning the system to be installed in the pedestrian underpass leading to Shimonoseki Station, the office decided to devise and carry out the trial installation of a system equipped with sensors that automatically detect the presence and direction of progress of visually-impaired persons at underpass entrances and passageway intersections. Also, devices that provide sound signals to inform the visually impaired of their location and direct them to their destination were part of the system. Because the sensors used with this system consist only of infrared beams and infrared cameras, and the only images detected by the cameras are those of reflective tape, the image processing is simple, and the privacy of visually-impaired persons is protected. The system places little burden on visually-impaired persons who use it, because all they have to do is place a band of reflective tape about 40 mm in width on their canes.

  • Supplemental Notes:
    • Five volumes of papers and one volume of abstracts comprise the published set of conference materials.
  • Corporate Authors:


  • Authors:
    • Tadaomi, S
    • Isao, S
    • Toshiro, K
  • Conference:
  • Publication Date: 1995-11


  • English

Media Info

  • Pagination: p. 1403

Subject/Index Terms

Filing Info

  • Accession Number: 00723408
  • Record Type: Publication
  • Report/Paper Numbers: Volume 3
  • Files: TRIS
  • Created Date: Jul 21 1996 12:00AM