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Coordinated Speed Management Systems to Reduce Speed-Related Crashes on Rural Roadways: Augmented Speed Enforcement (ASE)

Started: June, 2010 Ended: December, 2012 Project ID #4W3215 Status: Completed


The long-term goal of this project is to develop and evaluate system concepts that can be implemented across the rural road network to reduce speed related crashes. As a first step, the immediate objective if this first phase of research is to deploy a system to reduce speed violations (citations) and the number of speed related incidents at work zones on rural highways.


The California Department of Transportation (Caltrans) proposes an innovative safety program consistent with the objectives of the Rural Safety Innovation Program to reduce speed related crashes with coordinated speed management systems. This proposal is a joint effort between the Western Transportation Institute at Montana State University (WTI) and both the Partners for Advanced Transit and Highways (PATH) and the Transportation Sustainability Research Center (TSRC) at University of California, Berkeley (UCB) The vision for this program is to integrate four components – Education, Engineering, Enforcement, and Emergency Medical Services – to actively counter a high crash rate related to speeding on rural highways. The core research issue will be to investigate whether the deployment of an Augmented Speed Enforcement (aSE) system will change driver behavior and reduce crash rates. This system is differentiated from Automated Speed Enforcement (ASE) by using real time information about speed violators to support on road enforcement actions by California Highway Patrol (CHP). As a “Day One” application, this project will develop an aSE for deployment in rural work zones. The system developed and lessons learned in this project will then be used to prepare for wide scale deployment in a speed safety program that targets all forms of speeding along rural highways. Task Descriptions


Files & Documents

Sponsors & Partners

  • California Department of Transportation (CALTRANS) Sponsor

Part of: Safety and Operations, Systems Engineering Development & Integration

Project Tagged In: augmented speed control system, work zone safety

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