San Francisco Bay Area's popular 511 service is set to expand its traffic speed network. Coverage, now mostly limited to state roadways and interstates, will be expanded to include additional state roadways, major arterials, expressways and connectors.
The Metropolitan Transportation Commission (MTC), which runs the 512 service, assembles data from a variety of sources – Caltrans, CHP, and other partners – to provide the most accurate and reliable information about incidents and traffic disruptions in th