Skip to main content

California DOT installs driver information signs

California DOT (Caltrans) is installing electronic message signs in an effort to prevent or reduce congestion on the heavily used Interstate 10. Vehicle detection systems have also been installed on the 133 mile stretch of freeway to monitor traffic. The detection systems monitor speed and traffic volume, processing the data and transmitting it to the freeway message signs to give motorists real-time journey time estimates. "Changeable message signs will allow us to deliver information directly to drivers
January 29, 2013 Read time: 2 mins
California DOT (3879 Caltrans) is installing electronic message signs in an effort to prevent or reduce congestion on the heavily used Interstate 10.  Vehicle detection systems have also been installed on the 133 mile stretch of freeway to monitor traffic.

The detection systems monitor speed and traffic volume, processing the data and transmitting it to the freeway message signs to give motorists real-time journey time estimates.

"Changeable message signs will allow us to deliver information directly to drivers before they encounter large traffic back-ups," said Caltrans district 8 director Basem Muallem. "Motorists will be able to take an alternate route to avoid long delays."

The systems were implemented as part of the state's obligations under the Interstate 10 Lifeline Emergency Action Plan.  The Board of Supervisors unanimously agreed in October to partner with the state and tribal governments on implementing the plan, inspired by a series of massive traffic jams on I-10 that left motorists stranded in the last several years, most recently in February 2012.

Caltrans spokeswoman Terri Kasinga said the detection systems' project had been under way since before last February's crunch, but state officials expedited it to meet the action plan goals.

"We are very pleased to see Caltrans move ahead with their pieces of the plan," said Juan Perez, director of the county's Transportation and Land Management Agency. "The traveller information projects will be completed by the end of this year with the larger freeway bypass projects coming later."

For more information on companies in this article

Related Content

  • Freeway management for Sydney’s M4
    December 3, 2012
    In a bid to improve Sydney’s roads and congestion, Australia’s Federal and New South Wales governments are to jointly fund a project to equip the full length of the state’s M4 motorway with technology to improve traffic flows and ease congestion along this vital part of Sydney’s road network.The US$17 million project will provide the M4 with an electronic freeway management system consisting of variable speed and message signs, entry ramp signalling, CCTV and digital traveller information signs. Transport m
  • Wrong Way Detection System prevents accidents, improves safety
    January 31, 2012
    In 2006, within a span of four months, two incidents of drivers entering the 16km-long Westpark Tollway in Houston, Texas resulted in horrific accidents that caused a number of fatalities. As a result, Harris County Toll Road Authority (HCTRA) began investigating technologies that could help detect vehicles entering the tollway in the wrong direction.
  • US 511 system, the future of traveller information?
    April 23, 2013
    What started out at the turn of the millenium as a simple dial-up travel information service has grown out of all recognition in the digital age. Pete Goldin surveys the development to date of the US 511 traveller information system. In a little over a decade, 511 has gone from its original intent – a collection of recorded messages accessible via phone for pre-trip planning – to a network of dynamic traveller information services provided by states and cities throughout the US, offering access to a wide v
  • US state of the art workzone safety
    January 25, 2012
    The Texas Transportation Institute's Jerry Ullman talks about the state of the art in work zone safety in the US. Work zones are places where, perhaps more than anywhere else on the road network, mobility and safety are strongly linked. Historically, field crews and contractors wanted vehicles in work zones to be moving as slowly as possible, assuming that made conditions the safest for work crews. We are though starting to see a shift in such thinking with the realisation that excessive delays or slow-down