Case Study: Enhancing Intersection Safety and Efficiency with Western Systems

To enhance roadway safety and improve traffic efficiency, Caltrans District 12 embarked on a project to upgrade intersections with advanced roadside technology.

About Application

Los Angeles, CA - August 1, 2017: Road traffic to San Francisco.

To enhance roadway safety and improve traffic efficiency, Caltrans District 12 embarked on a project to upgrade intersections with advanced roadside technology. Partnering with Western Systems and Yunex Traffic, the district implemented state-of-the-art Roadside Units (RSUs) to provide real-time traffic updates and optimize intersection performance. This initiative aimed to create safer, more reliable transportation infrastructure for pedestrians, cyclists, and motorists alike.

Client: Caltrans District 12

Industry: Traffic Management & Infrastructure

Challenge: Improving Intersection Safety and Traffic Flow in Southern California

Safe and efficient intersections are critical for mobility in Southern California, where increasing traffic volumes present ongoing challenges for pedestrians, cyclists, and motorists. Recognizing the need for an advanced solution, Caltrans District 12 sought to upgrade and expand its roadside technology to enhance safety and optimize traffic management.

Solution: Deploying Advanced RSU Technology in Partnership with Western Systems and Yunex Traffic

Caltrans District 12 partnered with Western Systems and Yunex Traffic to address this challenge to expand its deployment of Roadside Units (RSUs). Building on a previous purchase of 188 units, they integrated an additional 52 RSUs at key intersections throughout the district.

These RSUs leverage cutting-edge technology, including Signal Phase and Timing (SPaT) messaging and Traveler Information Messages (TIM), to deliver real-time traffic updates, improve intersection coordination, and enhance road safety.

Implementation & Key Benefits

Through this deployment, Caltrans District 12 achieved several key improvements:

  • Optimized Traffic Flow: SPaT messaging enhances traffic light coordination, reducing congestion and minimizing wait times at intersections.
  • Enhanced Safety for All Road Users: TIM messaging provides real-time updates on road conditions and incidents, helping to prevent accidents and ensure safer travel.
  • Reliable Infrastructure: The upgraded system ensures intersection functionality during power outages or emergencies, improving reliability and peace of mind for residents.

Results: A Smarter, Safer Roadway Network

With the expanded Yunex Traffic RSU network, Caltrans District 12 has made tangible improvements to the daily lives of commuters and residents. The upgraded infrastructure has led to:

  • Fewer accidents and enhanced pedestrian safety.
  • Reduced congestion and smoother traffic flow.
  • Increased confidence among road users, knowing intersections are equipped with real-time safety solutions.

A Commitment to Community Safety and Innovation

Western Systems is proud to support Caltrans District 12’s commitment to safer, smarter urban mobility. This partnership exemplifies how advanced technology can be harnessed to create safer intersections and enhance the quality of life for local communities. By deploying innovative intersection management tools, Caltrans District 12 sets a new standard for road safety and efficiency, paving the way for future advancements in intelligent transportation systems. Contact Western Systems today to learn more.