2022 Volume 77 Issue 5 Pages I_697-I_710
There are new road maintenance policies that prioritizes migration of pedestrians in center of cities. If this policy is to be implemented in rural cities, it is necessary to eliminate useless transit traffics in center of cities by arranging ring roads. However, if the shape of ring roads is deformed, the expected effect of ring roads may not be obtained. In this study, ring roads are classified according to patterns of elliptical shapes, and an evaluation model of bypass function is examined. So, we consider some basic conditions to eliminate useless transit traffics in center of cities by arranging ring roads. In addition, the authors suggest that the proposed method is possibly applied to evaluate performance of theta-shaped network with road passing through in center of cities as a future work.