The city of Los Angeles completed the implementation of a citywide intelligent transportation system ITS in February, adding the last of its nearly-4,400 signalized intersections to the network. It is the first city in the world to complete a full-city ITS.
via ITS: Los Angeles completes citywide intelligent transportation system | Roads & Bridges.
400+ cameras
loop detectors
programmable traffic signals
ATSAC (Automated Traffic Surveillance and Control) proprietary software