基于对立交桥种种弊端的深刻认识,广州市政建设方面决定在未来的新城中心珠江新城的建设中,不再建任何一座高架路桥,而以人工隧道取代。受条件限制,广州没有全定向式立交,很多是全互通式和半互通式立交,车辆交叉运行一多就容易塞车,在狭小的环岛及较陡的坡道发生车辆的 Based on the profound understanding of the drawbacks of overpasses, Guangzhou Municipal Government decided not to construct any elevated road or bridge in the construction of Pearl River New Town in the future Metro Center, but to replace it with an artificial tunnel. Due to limited conditions, there is no full orientation interchange in Guangzhou. Many of them are all-interoperability and semi-interoperability interchanges. Vehicles cross-operate more than one and are prone to traffic jams. Vehicles that occur on narrow island islands and steep ramps