In Orange County, California, the cost of software for posting travel times on dynamic message signs (DMS) was $50,000.
Made Public Date
09/08/2009

172

Orange County
California
United States
Identifier
2009-00189
TwitterLinkedInFacebook

Summary Information

The California Department of Transportation (Caltrans) added software, at a cost of $50,000, to display travel times on dynamic message signs (DMS) in Orange County. The information comes from a system of 5,500 sensors embedded in freeway lanes to measure the number of cars and their speeds. A computer calculates that information and updates travel times on the overhead freeway signs about every three minutes to give Orange County motorists an estimate of how long their drives will take to reach major interchanges.

The information is displayed on existing DMS that already provided information about traffic incidents and Amber alerts. The sensors have been used for years to monitor traffic and post information on Caltrans' Web site; but Caltrans only recently began posting travel time information on DMS in Los Angeles and other counties in California.

Motorists go both ways on signs

Motorists go both ways on signs
Publication Sort Date
09/22/2006
Author
ERIC CARPENTER and ERIN UY

(Our website has many links to other organizations. While we offer these electronic linkages for your convenience in accessing transportation-related information, please be aware that when you exit our website, the privacy and accessibility policies stated on our website may not be the same as that on other websites.)

System Cost

System Software: $50,000

System Cost Subsystem