Auditory pedestrian signals increased pedestrian observing
behavior and reduce conflicts at a signalized intersection.
Transportation Research Record, 1998, No. 1578, 20-22.
An auditory pedestrian signal prompting pedestrians to look
for turning vehicles at the start of the walk signal increased
pedestrian observing behavior and almost eliminated pedestrian
motor vehicle conflicts at a signalized intersection. The
presence of the auditory message appeared to prime pedestrians
to respond more rapidly to turning vehicles. The signal
was judged to be very useful by visually impaired pedestrians
because it indicated when they could walk and specified
the street with the walk signal. Although this study was
only conducted over a relatively brief period (1 month),
the effects of similar intervention (signs prompting motorists
to look for turning vehicles) have been shown to endure
for at least a year.