what is atc in traffic signal

ATC stands for Advanced Transportation Controller, which is a powerful, on-street computing platform used for numerous Intelligent Transportation Systems (ITS) applications such as intersection control, ramp metering, data collection, and more. In the context of traffic signals, ATC controllers are the workhorse of signalized intersections and are designed to effectively respond to rapid changes in traffic flow. ATC controllers are based on open standards and built on a Linux platform. They make use of cameras and sensors to monitor traffic and collect data, which is evaluated to improve signal timings at a particular intersection. The ATC system is the intelligence behind the signalized intersection, managing traffic flow and optimizing signal timings.