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2. A policy on geometric design of highways and streets;American Association of State Highway and Transportation Officials,2011
3. NCHRP report 500: Guidance for implementation of the AASHTO strategic highway safety plan, volume 12: A guide for reducing collisions at signalized intersections;Antonucci,2004
4. Observation of left-turn conflicts at signalized intersections and design of gap-assistance systems in urban environment;Chan,2006
5. Gap acceptance at atypical stop-controlled intersections;Gattis;Journal of Transportation Engineering,1999