Study On Traffic Adaptability Of The Freeway Interchange

The interchange is an important part of the high level road network,in which it plays a key role in capacity and transport quality. With a large number of freeways have been opened, how scientific and rational to plan,design,construction and management the system of interchange is increasingly causing for concern。Studing on traffic adaptability of the freeway interchange will provide an important basis for the scale of construction design standards and design programs.At present,there is not yet suitable analysis system for the interchange system capacity of our country's traffic characteristics, for the reason that the lack of theoretical basis for the studies on traffic adaptability of the freeway interchange. In this paper, the studies on traffic adaptability of the freeway interchange could provide theoretical basises for interchange design.This paper analyzes the studing situation on the capacity of interchange in domestic and international, On the basis of that, introduced the basic components of Interchange, and made reasonable classificationes for the interchange, to summarize the basic types of interchange and the respective functions characteristics, had determined the type of the interchange of this paper studies. And introduced the traffic flow characteristic parameters of the interchange, detailed analysis the traffic flow characteristics and proposed calculation methods for capacity model and service level of each component of interchange.on the conditions of the interchange systems for combinations of different lanes and design speeds, had determined the capacity recommended values of types of interchanges, which studied by this paper. emulate the traffic flow by VISSIM simulation software. So as to check the feasibility of the traffic capacity recommended values.