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高等级干线公路经过大城市时，要与城市交通线相衔接；同时，还常常与其它干线公路在城市处交会。若干条交会的干线公路和城市交通线不会同时修建，甚至相隔时间较长。为使不同时期的建设项目能够在各方面相互协调，做好干线公路城市过境方案规划，随着高等级公路快速发展，其重大意义越来越明显。此项规划是一个重要而复杂的新课题，这里就规划目的、规划的基本思路和规划中应注意的问题提一些思路，与大家共同探讨．
High-grade main road through the big cities, with the urban traffic line convergence; the same time, often with other trunk highways in the city rendezvous. A number of rendezvous trunk roads and urban traffic lines will not be built at the same time, or even longer intervals. In order to coordinate construction projects of different periods with each other in various aspects and plan the transit transit scheme of the trunk highway, the significant significance of the rapid development of high-grade highways becomes more and more obvious. This plan is an important and complicated new task. Here we will discuss some ideas about the purpose of the plan, the basic plan of the plan and the problems that should be noticed in the plan.