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Vibration blind track is a kind of facilities which can help the visually impaired and hearing-impaired people to pass through the sidewalk safely by vibration.
When the green light is on, the convex part of the blind track will vibrate. The vibration frequency is relatively slow, and it vibrates every two seconds.When the time is not enough, it will enter the yellow light, and the facility will change the vibration frequency ten seconds in advance to remind pedestrians that it vibrates every second.When the light is red, the vibration will stop, which means no traffic.