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."

Related Content

  • October 21, 2016
    Caltrans takes the long view of transport
    Caltrans’ Malcolm Dougherty took time out of his schedule at ITS America 2016 in San Jose to talk to ITS International about current and future challenges. As director of California Department of Transportation (Caltrans) since mid-2012, many would say that Malcolm Dougherty has one of the best jobs in transportation. Caltrans is one of the most progressive and innovative transport authorities, implementing policies to encourage cycling, piloting new
  • March 1, 2013
    Traffic monitoring and hard shoulder running
    Hard shoulder running is on the increase – and the detection and monitoring of incidents on affected roads is occupying the minds of experts across Europe and the US
  • April 4, 2013
    Virginia expands travel information on I-66
    Virginia Department of Transportation (VDOT) is to expand the traffic information system on Interstate 66 (I-66). Motorists will now see travel times displayed on overhead message signs for the 35 miles from Washington to Haymarket. VDOT has been posting the number of miles and minutes to key destinations at three locations between the Capital Beltway and Gainesville since August 2011. Message signs will display the information at seven new locations. In addition, by summer, six more locations will be ad
  • May 29, 2015
    Oklahoma DOT opts for IRD WIM screening system
    Oklahoma Department of Transportation (ODOT) has awarded International Road Dynamics (IRD) a US$2.54 million project to build, implement, and maintain a new and innovative port-of-entry (POE) electronic screening system (ESS) for commercial vehicles at Interstate-40 westbound, Sequoyah County, Oklahoma. This contract includes the supply and installation of IRD's weigh-in-motion (WIM) and intelligent roadside operation credentialing (iROC) system utilising license plate reader (LPR) and USDOT reader technolo