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Improving public transit usability for blind and deaf blind


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Improving public transit usability for blind and deaf blind

  2. 2. Outline Purpose Related work Patten and challenges of public transit use The mobraile framework A tool for deaf-blind people Conclusions Reference
  3. 3. Purpose Connecting a Braille Display to a Smartphone. Improve the usability of the public transit system for blind and deaf-blind people. Because people with severe visual impairments cannot drive, they must use the public transit system.
  4. 4. Related workInterviews with Blind PeopleThree key challenges that blind people faced  locating a bus stop.  boarding the correct bus.  knowing when to disembark a bus. Have to relied heavily on the bus driver to announce their stop and carried Braille notetakers when on- the-go.
  5. 5. Related work Interviews with Deaf-Blind People  They relied heavily on cards describing a bus route and the stop at which they must disembark. Cards were printed in advance, often with the assistance of a sighted person.  They read Braille and owned Braille displays, which are the most common way for deaf-blind people to access digital information.
  6. 6. Patten and challenges of publictransit use The use of public transit generally relies on visual cues that are unavailable to people who are blind or deaf-blind. Example:  People must see the route number of an approaching bus.   The landmarks that indicate their stop is near.
  7. 7. The mobraile framework The Braille display is tethered to the Android phone over Wi-Fi or 3G. The Braille display user loads a MoBraille webpage on the display’s built-in browser. The webpage sends requests to the Android phone that are processed by a Java servlet running on the phone. Braille display user access to a 3G network, GPS, a compass, and other features.
  8. 8. A tool for deaf-blind people When waiting at a bus stop, a deaf-blind person can use our tool to find out how much longer he must wait for his bus to arrive. Android application uses the GPS and compass to identify the current stop and queries the One BusAway API to get arrival information for the route at the current stop. The arrival information is displayed in Braille.
  9. 9. Conclusions MoBraille has the potential to improve the public transit experience for blind and deaf- blind people. They plan to develop additional tools that enable blind and deaf-blind people to locate a bus stop and disembark a bus at the right time more independently.
  10. 10. Reference Shiri Azenkot and Emily Fortuna, Improving Public Transit Usability for Blind and Deaf- Blind People by Connecting a Braille Display to a Smartphone, ASSETS 10 Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility