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Surrogate Safety Assessment Model

Project Information

Project ID: 
Project Status: 
Start Date: 
Tuesday, September 9, 2003
End Date: 
Saturday, July 17, 2010
TRT Terms: 
Collisions; Intersections; Research; Safety; Traffic Safety; Traffic; Simulation
FHWA Discipline: 
Subject Area: 
Highways, Research, Safety and Human Factors

Contact Information

First Name: 
Shyuan-Ren (Clayton)
Last Name: 
(202) 493-3054
Email Address: 
Safety Data and Analysis Team
Office of Safety Research and Development
Office Code: 

Project Details

Project Description: 

This project aims to produce a software tool that computes surrogate safety measures from vehicle trajectories that were tested with several widely used traffic simulation models and validated with real crash data.


Safety of traffic facilities is most often measured by counting the number (and severity) of crashes that occur. It is not possible to apply such a measurement technique to traffic facility designs that have not yet been built or deployed in the real world. The purpose of this project is to develop a software tool for deriving surrogate safety measures for traffic facilities from data output by traffic simulation models.