Traffic lights could be getting a new colour
Red, amber, green – traffic lights are pretty much the same the world over, and have been for more than a century. However, ...
朝日新聞社4y
Smartphone app system tells blind people the color of traffic signals
app on their smartphones get a voice-activated message when they approach a traffic light equipped with the system via Bluetooth telling them what color a light is. The device, which has a ...