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

  • Video developments in automatic incident detection
    May 22, 2012
    David Crawford reviews technological progress with automatic incident detection Highway safety problems are likely to intensify given recent predictions of future traffic growth across the world. In the United States, the National Highway Traffic Safety Administration (NHTSA) reports that currently over 30,000 deaths and 1.5 million injuries occur as the result of accidents on the nation’s roads each year. These figures will increase with the number of kilometres travelled each year in the US expected to gr
  • Jacobs JV awarded contract for California high speed rail
    July 23, 2015
    The Jacobs Engineering Group has been awarded a contract to provide design services for the Construction Package 2-3 (CP 2-3) of the California High Speed Rail, the continuation of construction on the California high-speed rail system south towards Kern County. Jacobs is the lead designer for the Dragados-Flatiron joint venture for the design-build contract and is responsible for the infrastructure design. The California High Speed Rail is the first true high-speed rail being constructed in the United S
  • San Diego: Let there be (street)light
    March 30, 2020
    The influence of intelligent streetlights is spreading. David Crawford finds that San Diego’s deployment – and attendant legislation – may offer a blueprint for other cities going forward
  • Congestion charge: Big Changes in the Big Apple
    July 11, 2023
    New York City is falling in line with other major global cities in charging drivers for using its streets, writes Adam Hill: the Central Business District Tolling Program is on its way. Probably