Research was made on the optimum design of new road network to def ine the unit design unblocked index and the unit design importance degree.

• 对新建道路网络设计中的设计参数进行了初步探讨；进而定义了单元设计畅通指数和设计重要度；并在此基础上提出了新建区域道路网络系统全局优化设计的量化方法.