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Improving Safety for RITI Communities in Idaho – Documenting Crash Rates and Possible Intervention Measures

This project is a continuation of a Center for Safety Equity in Transportation (CSET) Year-1 project at the University of Idaho titled “Documenting the Characteristics of Traffic Crashes for RITI Communities in Idaho”. The project represents the second step in establishing an in-depth understanding of the traffic safety conditions in Rural, Isolated, Tribal or Indigenous (RITI) communities towards the ultimate goal of improving safety for these underserved groups through research, education, and outreach activities. The Year-1 project, currently underway, has three objectives: (1) identify and document different sources of crash data for RITI communities in Idaho, (2) conduct an in-depth crash analysis to document the characteristics of traffic crashes in RITI communities in Idaho, and (3) identify and document different sources for traffic exposure data (vehicle-miles-travelled) for RITI communities in Idaho. In this project the study team aims to achieve the following three objectives: (1) Develop a methodology to estimate Average Annual Daily Traffic (AADT) on rural roads based on available traffic counts and on “potential network flow” between origins and destinations; (2) Use AADT and other exposure measure data to document crash rates for different roadway segments in RITI communities in Idaho; and (3) Synthesize and document possible engineering and education intervention measures to reduce the number and severity of crashes for RITI communities in Idaho.