Impact Analysis of Exit Ramp on Freeway Traffic Efficiency

4 School of Transportation, Southeast University, Nanjing, China, PH (86) 025-83792603, email: seasongn@163.com. Abstract: Via simulation analysis, this paper applied one-way analysis of variance of factors which impacted freeway traffic efficiency near exit ramp, and designed simulation project by method of Orthogonal Experimental Design, found out the obvious factor influencing traffic efficiency in up-stream area of ramp, and eliminated three unapparent factors in down-stream area. Keyword: traffic efficiency, exit ramp, orthogonal experimental design