高速公路施工区交通特性分析

对高速公路施工区的控制区进行了划分，明确了施工区各控制区的主要功能及特征。施工区车辆运行特性表现为合流车辆会造成施工区交通流重分布、超车道车辆优先通行以及合流的强制性等。在大量交通调查的基础上，对施工区行车道、超车道、合流车道的车头时距分布，各控制区的地点车速的频率分布、空间分布．车道占有率以及车辆汇入特征进行了深入分析。

Analyses of Traffic Characteristics of Expressway Work Zones

Through dividing the expressway work zone into several control zones, the function and character of the control zones in the work zone are expounded. The operation of the vehicles in the work zones is characterized by the redistribution of the traffic flow in the work zones, vehicles on the left lane priority and mandatory merging. On the basis of a large number of traffic investigations, this paper deeply analyzes the distribution patterns of time headway of vehicles on left lane, right lane and merging lane, the frequency distribution and spatial distribution of spot speed on each control zone, and the characteristics of the vehicle occupancy and vehicle merging.