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2. Roadway Safety Design Synthesis Report No. FHWA/TX-05/0-4703-P1;Bonneson,2005
3. Carter, Daniel, Raghavan Srinivasan, Frank Gross, and Forrest Council, 2012.”Recommended Protocols for Developing Crash Modification Factors.” American Association of State Highway and Transportation Officials (AASHTO), NCHRP Project 20-07. February 2012.
4. A Guide to Developing Quality Crash Modification Factors FHWA-SA-10-032.;Gross,2010
5. Harwood, D. W., F. M. Council, E. Hauer, W. E. Hughes, and A. Vogt, 2000. “Prediction of the Expected Safety Performance of Rural Two-Lane Highways. Report FHWA-RD-99-207.” FHWA, U.S. Department of Transportation, 2000.