城市道路交叉口转向半径与右转运行车速关系研究

he safety of non-motorized traffic and right-turning vehicles at intersections are affected by the velocity of right-turning motors，which is drastically influenced by the turning radius. In this article, we choose eight right-turning corners at two typical intersections to estimate the statistical model of velocity of right-turning motors and turning radius. Meanwhile, comparisons have been made among operating speeds and between design speed and actual velocity under traffic confliction or not. The research indicates that turning radius is proportional to the velocity of right-turning vehicle, also the actual speed is higher than the design speed under a given radius. Conclusions could be guidelines for standard of intersection design and signalized control strategy of right-turning vehicles.