Blind Pedestrians' Access to Complex Intersections
Funding National Eye Institute of the National Institutes of Health -
Bioengineering Research Partnership
June 2000- May 2005
The research study titled Blind Pedestrians' Access to Complex Intersections, a 5-year study that began in June 2000, includes a major task to examine a number of issues related to APS.
Objectives of APS task:
Determine the optimal characteristics of push-button locator and WALK
signal tones, compare different APS technologies.
Carry out a demonstration project using an optimal APS technology.
During the first two years of this project, which have just ended,
the focus of the research has been on determining optimal characteristics
for the visually impaired traveler with respect to optimal characteristics
of tone signals for detection and beaconing in the presence of vehicular
Signal strategies to enable correct determination of which crosswalk has the WALK signal and the most positive impact on alignment and veering.
Height of the audible signal.
Effect of locator tone on crossing accuracy.
Prototype APS technology manufactured by Novax, having the optimal characteristics as determined by testing in years 1 and 2 and part of year 3, will be tested at two intersections in each of four cities several times over a period of the subsequent three years.
Western Michigan University, Vanderbilt University, Boston College, Johns Hopkins, University of North Carolina Highway Safety Research Center
Billie Louise (Beezy) Bentzen
Boston College, Dept. of Psychology
140 Commonwealth Avenue, Chestnut Hill, MA 02467-3807
919-962-8705 - firstname.lastname@example.org