Abstract:In order to fully demonstrate the scientificity and rationality of the reconstruction scheme of ring interchange, the present situation and the traffic capacity after reconstruction of Huizhou Erling Interchange are analyzed through the gap acceptance theory model and the capacity calculation method of signalized intersection generally recommended domestically. The results show that the traffic capacity of ring interchange is relatively low, which is not suitable for the urban development demand with higher car ownership. The reconstruction of the interchange into the signalized intersection at grade can effectively improve the service level of interchange. It can be seen that it is reasonable and feasible to reconstruct the ring interchange into signalized intersection.