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 29, 2012
    Project to ease traffic on Interstate 80 unveiled
    California’s regional transportation officials are taking a comprehensive approach to relieving clogged arteries that affect the health of commuters and cities along a 22-mile stretch of the Interstate 80 corridor from the Carquinez Bridge to the MacArthur Maze.
  • March 23, 2015
    I-80 Smart Corridor sets the ITS standard for California's Bay Area
    Colin Sowman looks at California’s ‘smartest’ road which will open this spring to counter congestion and accidents on one of the Bay Area’s busiest interstates. Interstate 80 (I-80) is one of the busiest roads in the San Francisco Bay area with up to 270,000 vehicles using the corridor every day. The section between the Carquinez Bridge in Crockett and the Bay Bridge not only suffers congestion during the working week but also at weekends. Traditional remedies such as building additional lanes (there are al
  • March 23, 2015
    I-80 Smart Corridor sets the ITS standard for California's Bay Area
    Colin Sowman looks at California’s ‘smartest’ road which will open this spring to counter congestion and accidents on one of the Bay Area’s busiest interstates. Interstate 80 (I-80) is one of the busiest roads in the San Francisco Bay area with up to 270,000 vehicles using the corridor every day. The section between the Carquinez Bridge in Crockett and the Bay Bridge not only suffers congestion during the working week but also at weekends. Traditional remedies such as building additional lanes (there are al
  • October 14, 2013
    California DOT implements smart corridor
    The California Department of Transportation (Caltrans) recently completed a smart corridor project on State Route 12 in Solano, Sacramento and San Joaquin counties, and I-5 in San Joaquin County. The project utilises intelligent transportation system (ITS) technology for five electronic message signs and four closed-circuit TV cameras to provide drivers with up to date travel information, enabling them to choose an alternate route in the event of congestion or roadway incidents.