What type of warning is given at traffic lights to inform the visually impaired that they have the walk signal?

The beeping sound is an effective warning system used at traffic lights to assist visually impaired individuals by providing an audible cue that it is safe to cross the street. This auditory signal helps them to navigate intersections safely, ensuring they can determine when the walk signal is active.

In urban areas, beeping sounds are often enhanced by varying tones or patterns to indicate different directions—helping users to identify whether they should proceed straight or turn. The reliance on sound is crucial for those who are unable to see visual signals, thereby fostering independence and safety in pedestrian navigation.

Flashing lights, vibrating signals, and audible announcements also serve to enhance traffic safety, but they do not specifically indicate the walk signal for visually impaired pedestrians in the same widely recognized manner as the beeping sound does.