A study is reported which examined existing audible signal sitesand surveyed visualy impaired individuals and their advocate organizations, traffic engineers, audible signal manufacturers, and relevant specialists (audiologists) to determine, among other issues, how 2 questions are being answered: at what intersections should audiblepedestrian signals be installed? And to what uniform standards or criteria should the devices conform? Criteria for installing such signals are listed and discussed. The wide variety in devices and procedures are summarized. It is noted that audible pedestrian signals are feasible, but only at certain complex or confusing intersections frequented by visually impaired persons. Such areas include public transit stops, shopping centers, and medical and educational facilities. The devices are not meant to be a substitute for a visually impaired person's orientation and mobility skills, but rather an aid to them.
Abstract