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

  • China plans more ITS deployment despite economic slowdown
    March 30, 2017
    The Chinese government is turning to ITS to help solve urban traffic congestion in the majority of its large cities. Eugene Gerden reports. China is investing an estimated 3.5bn yuan ($551 million) per year in ITS and while the country’s current economic strategy may see this decline, the government plans to continue active development of the national intelligent transport system.
  • How WiM helps authorities identify repeat offenders
    May 31, 2023
    Company profiling – the process of identifying repeat corporate offenders when it comes to things like truck overloading – is one of many uses of WiM. And it may become more important
  • Caltrans trials Xerox’s Passenger Detection System
    October 30, 2015
    Xerox’s Passenger Detection System has been trialled in California and compared with the state’s team of human counters giving some interesting results, as Colin Sowman discovers. Like others adopting high-occupancy and high-occupancy vehicle (HOV) lanes for congestion management, Caltrans has faced challenges with compliance in what has been effectively an ‘honour system’ with drivers trusted to set their tags correctly or comply with the multi-passenger requirement.
  • Speeding the recovery of stranded commercial vehicles is paying dividends in Georgia
    April 9, 2014
    Delcan’s Cheryl-Marie Hansberger details how Georgia’s Towing and Recovery Incentive Program (TRIP) has improved road safety and helped to reduce traffic congestion in the metro Atlanta region. By 2008, steady increases in population had led the Texas Transportation Institute to declare Atlanta, Georgia to be the third most congested city in the US. In an effort to increase road user safety and mitigate the effects of traffic, the Georgia Department of Transportation (GDOT) and its local partners have imple