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

  • Caltrans selects TransSuite
    December 3, 2012
    TransCore ITS is to supply the State of California Department of Transportation (Caltrans) with its TransSuite traffic control system for management and centralised monitoring of existing traffic signals statewide. The TransSuite system will support Caltrans’ strategy to proactively manage traffic through the monitoring of traffic signals and traffic conditions at state-operated intersections. TransCore ITS will develop an interface to the Caltrans controller firmware to support once-per-second communicati
  • US adopts automated enforcement… gradually
    March 4, 2014
    The US automated enforcement market is in rude health as the number of systems and applications continues to grow and broaden. Jason Barnes reports. Blessed and cursed – arguably, in equal measure – with a constitution which stresses the right to self-expression and determination, the US has had a harder journey than most to the more widespread use of automated traffic enforcement systems. In some cases, opposition to the concept has been extreme – including the murder of a roadside civil enforcement offici
  • Cold efficiency
    July 24, 2012
    Tools to support operational decisions in winter maintenance can remove subjectivity and increase efficiency; Vaisala's Danny Johns talks about latest developments Even the presence of trees at the roadside can have an effect on temperature An effective Road Weather Information System (RWIS) network can save a local road authority or jurisdiction tens of thousands of dollars or Euros'-worth of labour and consumables in a single night. Get those winter maintenance operations right over just three or four nig
  • Applied Information’s app gets Marietta connected
    October 26, 2017
    Must the benefits of connected vehicle technology wait for a generation of new or retrofitted vehicles? The US city of Marietta is about to find out. Can connected vehicle functionality be delivered via a smartphone? Well, in Marietta, Georgia, they are about to answer that question. The city is testing a smartphone app which warns motorists of nearby cyclists and pedestrians, approaching first responders, wrong-way driving, entering active school zones and much more.