States turn to private companies for traffic maps

11/27/2013 | San Francisco Chronicle (free content)

Many states including California and Michigan are paying private sector companies such as Google and Inrix to provide data for online public traffic maps because the failure rate of highway traffic sensors has become so high in those areas. In California, where about a third of the sensors are offline, the state transportation agency pays Google $25,000 per year to incorporate the sensor data the state does have with location-based traffic information Google collects from cellphone users.

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San Francisco Chronicle (free content)

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