对于城市规划来讲,事先预测其工作区内所需道路面积,以尽量避免实际交通网络中发生拥挤阻塞,具有重要意义.在本文,我们通过考虑一个城市通勤高峰时期的车辆交通情况,并通过利用走行中的车辆占用道路面积这一概念,基于一个相对现实的模型,从理论上对于圆形或方形城市工作区推导了所需的道路面积,并将两者加以比较,以发现与其交通网络结构相关的工作区的相对有效形状. For urban planning, it is of great significance to predict in advance the road area required in the work area so as to avoid congestion in the actual traffic network. In this paper, we consider the vehicle traffic situation in an urban commuter rush hour and pass Using the notion of road occupancy by vehicles on the road, based on a relatively realistic model, the theoretical road area deduced from a circular or square urban work area is derived theoretically and compared with each other to find that with the traffic network Relatively effective shape of the structure-related work area.