Skip to main content

Caltrans reflects latest safety policy

After recent studies, California DoT is reviewing its highway design standards
By David Arminas August 7, 2020 Read time: 1 min
Caltrans has installed two-way reflective markers to prevent potentially fatal mistakes (image credit: Caltrans)

Recent pilot programmes by California’s Department of Transportation - Caltrans – and a university research centre highlight effective measures that have been taken on board by the US state.

The pilot was developed following 10 wrong-way driver related collisions on freeways around the cities of Sacramento and San Diego in the first six months of 2015.

Caltrans engaged the University of California’s Davis Advanced Highway Maintenance and Construction Technology (AHMCT) Research Center to gather data on the rare but often deadly wrong-way driving collisions.
 
One of the prevention measures included in the three-year pilot programme was reflectors that alert drivers who are entering the roadway in the wrong direction - leading to a 44% drop in such offences in San Diego.
 
“Adding the two-way reflective markers proved to be so effective that Caltrans updated its state-wide design standards,” said Toks Omishakin, Caltrans director. 

During the study, Caltrans installed and tested different ways to deter wrong-way drivers along exit ramps in San Diego as well as the city of Sacramento.

There will be more on this story in the North America edition of ITS International September/October 2020 

For more information on companies in this article

Related Content

  • Congestion pricing - no such thing as a free ride
    October 2, 2018
    The widespread adoption of autonomous vehicles is likely to increase congestion, many experts believe. But Wes Guckert of Traffic Group believes that tolling could provide the answer. While it is still hard to wrap your head around the idea of getting into a vehicle without a driver, the industry is now used to hearing, reading, participating in the advancement of autonomous vehicles (AVs). Those in the industry have heard about Uber delivering a shipment of Budweiser, or the convoy of driverless trucks
  • The case for using toll revenues to fund Interstate improvements
    May 11, 2012
    High road toll increases threaten new regulation, but states should be free to use toll revenue for Interstate improvements. Bob Poole reports Large toll rate increases have been implemented recently by the Port Authority of New York and New Jersey, justified in part to help pay for its World Trade Center project. In response, a bill was introduced in Congress that would allow the Secretary of Transportation to regulate tolls on every bridge on the country’s Interstates and other federally aided highways. F
  • Go Denver opens up a world of seamless mobility and better data-driven decisions
    June 5, 2017
    Denver’s pioneering Go Denver mobility-as-a-service app has attracted 7,000 users in a matter of months. Geoff Hadwick heard how at ITS International’s recent conference. If Mobility-as-a-Service (MaaS) is ever going to work, it needs to have “one universal platform everywhere” according to Sean Mackin, former manager of parking and mobility services at the Denver transportation and mobility department and now Colorado branch manager for ABM Parking & Transportation. Speaking at the recent MaaS Market confe
  • La Trobe University trials connected motorcycle technology
    June 11, 2025
    Melbourne academics' programme enhances riders’ awareness of hazards