1. Danief S. (1983). "Turner and Edward R. Mansfield. Variability in Rural Accident Reporting" In Transportation Research Record: Journal of the Transportation Research Board No. 910 TRB National Research Council Washington D. C. 8-13.
2. Federal Highway Administration (2000). " National Agenda for Intersection Safety" U.S. Department of Transportation Washington D. C.
3. Research into the validity of the traffic conflicts technique
4. Institute of Transportation Engineers (1999). " Traffic Engineering Handbook" Institute of Transportation Engineers Washington D. C.