The Henderson Police Department is looking to get a handle on red-light runners using indicator lights installed at a dozen intersections throughout the city. Red-light indicators, which have been ...

[David Bryant] clearly has an awareness of the impact of an excess concentration of CO 2 in the local environment and has designed an SAO board to add a CO 2 traffic light indicator to one of the ...

Question: I’m wondering about a light that seems to only be on at night on the traffic lights. It’s a small purple or blueish light that’s near the traffic lights.