Audible signals are one hot issue in the visually impaired community.
Sighted pedestrians get information from the pedestrian greens that signal before the vehicle greens are given. To give visually disabled pedestrians the same access to this information, many cities have implemented audible signals. Some were unable to localize the sound and confused it with another intersection. Some found it difficult to distinguish the sound at all during periods of heavy traffic. Dottie Neal is among those who find the the chirping cues to be detrimental.