CAJ | 학술논문

本着保护环境和节约城市用地的原则，城市道路设计时对规划线形调整的余地很小，对于交角小于70°的畸形交叉口，通常采用设置导流岛的形式。导流岛的设置不仅满足交叉口视距的要求、减弱锐角交叉口的不利影响、保证行车视野、规范行车轨迹、提高交叉口通行能力，同时仅交叉口夹角小的一侧占用道路红线外用地土地，较常规改变次要道路线形的方法占地要小的多，进一步节约城市用地。
본착보호배경화절약성시용지적원칙，성시도로설계시대규화선형조정적여지흔소，대우교각소우70°적기형교차구，통상채용설치도류도적형식。도류도적설치불부만족교차구시거적요구、감약예각교차구적불리영향、보증행차시야、규범행차궤적、제고교차구통행능력，동시부교차구협각소적일측점용도로홍선외용지토지，교상규개변차요도로선형적방법점지요소적다，진일보절약성시용지。
The principle of the protection of the environment and conservation of urban land use, urban road design room planning linear adjustment is small, less than 70 ° for the angle of deformity intersections, usual-ly in the form set diversion island. Set diversion Island not only meet the intersection sight distance require-ments, reduced the adverse effects of an acute angle intersections, to ensure traffic vision, specification lane track and improve intersection capacity, while only a small intersection angle occupied by the road side out-side the red line land use land, changing the secondary roads than conventional linear method covers a much smaller, more urban land conservation.