Service Request #2: Why Is This Red Light So Damn Long?

Los Angeles's traffic light system, known as ATSAC, is explored, revealing its origins in the 1984 Olympics when city leaders sought to alleviate traffic congestion for the influx of visitors. The system connects nearly 5,000 traffic signals, using sensors to monitor traffic flow and algorithms to adjust signal timing in real-time. Salita Reynolds, Chief Innovation Officer at LA Metro, explains how engineers in a downtown control room use data and occasional manual intervention to manage traffic, balancing the needs of different streets and modes of transportation. Despite its sophistication, ATSAC faces limitations with geometrically bizarre intersections like the Fairfax asterisk, highlighting the ongoing challenge of optimizing traffic flow in a car-centric city. The system is expected to play a key role in the upcoming 2028 Olympics, with further innovations planned.