Acceptability of audible pedestrian signal noise

This paper considers the impact on local residents of audible pedestrian signals (APS) that provide cues to the visually handicapped pedestrians on the onset of the various signal phases at a signalized crosswalk. We investigate the extent of the noise intrusion problem of APS through understanding the acceptability by the general public. From the perception surveys conducted, vehicle engine/braking sound, neighbor talking/playing and vehicle alarm are the top three irritating noises experienced while sleeping whereas audible signals is ranked at 21st position. The maximum sound level of the signals found to be acceptable indoors is close to 60 dBA.

► This paper looks at the noise nuisance associated with audible pedestrian signals that help visually impaired cross streets.
► A sample of residents in Singapore finds that the noise problem is not a major issue for those living near such crossings.
► The noise is dwarfed by noises associated with metro trains, domestic activities in adjacent apartments and road traffic.
► An acceptable audible pedestrian signal is found to be about 60 dBA.