What does "traffic signal coordination" refer to?

Traffic signal coordination refers to the synchronization of multiple traffic signals. This process is designed to optimize traffic flow on roadways by ensuring that signals work together to manage the movement of vehicles and pedestrians efficiently. When traffic signals are coordinated, they can minimize delays, reduce unnecessary stops, and enhance safety at intersections and along corridors. This synchronization can involve timing adjustments so that vehicles moving within a specific direction encounter green lights at regular intervals, thereby promoting smoother traffic flow.

In contrast, the installation of new traffic signals involves setting up the physical infrastructure necessary for signals to operate, which does not inherently involve coordination with other signals. The use of manual traffic controls indicates human intervention in traffic management, which does not relate to automated signal coordination. Lastly, scheduling signal maintenance focuses on the upkeep of existing traffic signal infrastructure rather than the functional timing and operation of multiple signals working together.