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

  • April 20, 2016
    Bluetooth technology to shorten travel times
    A new traffic app recently launched in Adelaide, South Australia, is helping drivers avoid roadworks and traffic jams with real-time updates. AddInsight taps into more than 400 of Adelaide’s state-of-the-art Bluetooth receivers, which monitor the city’s road network in real-time and broadcasts verbal messages to drivers in about approaching delays through a vehicle’s hands free systems and mobile phones. The free app has been released at a time when the South Australian capital’s road network has been
  • February 2, 2012
    Variable message signs continue to deliver travel information
    Arguably the 'face' of ITS, variable message signs are far from being a passing solution
  • January 30, 2012
    Toll performance exceeds expectations, improves travel times
    Jean Harito, Attica Tollway Operations Authority and Steve Morello, Egis Projects describe how looking to exceed contractual obligations makes good operational and business sense. The Attica Tollway is a modern, 65km, access-controlled urban motorway with three lanes in each direction. It constitutes the ring road around the extensive metropolitan area of the Greek capital, Athens, and forms the backbone of the entire road network in the Attica region. By ensuring freeflow operating conditions, the Attica T
  • October 7, 2013
    North Florida signals coordinated approach to congestion management
    David Crawford investigates innovative congestion management in Florida. The largest US city by area is well into the implementation of an ambitious congestion management system (CMS) on the scale of those of higher-profile centres such as Seattle and San Francisco. Regional agency the North Florida Transportation Planning Organisation (NFTPO) aims to ensure that commuters on major highways in Jacksonville can rely on a minimum 72km/h (45mph) driving speed in normal conditions.