@BOOK{NAP26031, author = "Transportation Research Board and National Academies of Sciences, Engineering, and Medicine", editor = "Darren J. Torbic, Jessica M. Hutton, MRIGlobal and Jacobs Kim Kolody Silverman and Douglas W. Harwood, Harwood Road Safety, LLC", title = "Developing a Guide for Quantitative Approaches to Systemic Safety Analysis", doi = "10.17226/26031", abstract = "Highway agencies have traditionally managed the safety improvement process by identifying and correcting high-crash locations (\u201chot-spots\u201d), where concentrations of crashes and, often, patterns of crashes of similar types, were found. However, when crashes are evaluated over too short a period of time (3 years or less), locations may be identified as hot-spots simply due to the random nature of where crashes occur.The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 285: Developing a Guide for Quantitative Approaches to Systemic Safety Analysis describes the research methodology and findings that supported the development of a systemic safety - an alternative (or supplement) to the hot-spot approach - analysis guide and associated training materials.The document is supplemental to NCHRP Research Report 955:Guide for Quantitative Approaches to Systemic Safety Analysis.", url = "https://nap.nationalacademies.org/catalog/26031/developing-a-guide-for-quantitative-approaches-to-systemic-safety-analysis", year = 2020, publisher = "The National Academies Press", address = "Washington, DC" }