In Anniston, the traffic signal turns yellow before I have a chance to get across the intersection. Why does it change so fast?
Many traffic signals operate fully actuated. This means there are sensors in all directions of the intersection. The amount of green time depends on the number of vehicles. The more vehicles, the longer the green will time out. If only one vehicle, then the minimum amount of green will time out and then service the other directions of travel.
Related Questions
- When I’m walking across an intersection controlled by a traffic signal the white "walk" light never stays on long enough for me to cross. Why?
- Why build a roundabout rather than a traditional intersection with a traffic signal at the Manette end of the bridge?
- How is the timing interval determined between the red, yellow and green traffic lights at an intersection?
