What is a traffic controller? what are its functions?

A traffic controller is basically a system design to regulate traffic in a controlled manner with a set of traffic rules to follow so as to ensure public safety.

The main functions of a traffic light controller are listed below:

To direct and regulate vehicular and pedestrian traffic To ensure safety of construction workers, emergency response team and public in general in order to avoid accidents These also uses CCTV and other monitoring system to manage flow of traffic and suggestion concerned with traffic congestion. These are provided by local or state authorities. To ensure smooth traffic flow in order to save time and chaos.