Overview
The analysis of safety data enables agencies to better understand the nature of the problems and develop appropriate countermeasures to address transportation safety. The results of safety data analyses can be incorporated into a transportation safety plan. Three primary approaches to safety data analysis are presented below: contributing factors analysis, systemic safety analysis, network screening, and site safety analysis/road safety audits. An overview of these data analysis methods is also presented in these guides:
NEW!
An updated and expanded version of the Tribal Crash Reporting Toolkit is currently being developed that will include software to conduct safety analysis. This project is a partnership between Trinidad Rancheria, Federal Highway Administration, and the National Highway Traffic Safety Administration. The contractor for this effort is Qk4 and the project web page is https://www.qk4.com/services/native-american-services/tribal-crash-data-reporting-resources/
Contributing Factors Analysis
Examining crash data to identify trends in crash circumstances. This analysis is useful when preparing to write a safety plan.
Systemic Safety Analysis
Rather than managing risk at certain locations, a systemic approach takes a broader view and evaluates risk across an entire roadway system
Network Screening
Analyzing crash data along a roadway network to determine areas of high crash frequency.
Road Safety Audits & Site Safety Analysis
Detailed study of a particular location's safety concerns by an independent, multi-disciplinary team of safety professionals.