福州市二环路小客车空驶特性研究

Research on Empty Driving Rate of Fuzhou Second Ring Road

快速路作为城市交通系统主骨架,小客车高频次使用和高密度运行,对其通行效率和服务水平产生一定影响。通过研究福州市二环路典型断面的交通量、车辆速度以及小客车空驶状况等数据,利用SPSS软件分析了空驶小客车统计特性和时间分布特性,建立了小客车空驶量与交通量关系模型。研究表明:小客车平均空驶率约为58.26%,空驶率高于50%的时间超过九成;小客车空驶量与交通总量、小客车交通量均成线性关系。

As the core transportation system in a city,the expressway may have low efficiency and undesirable service level due to the high-frequency usage and high-density of passenger cars.Considering the second ring expressway of Fuzhou,this paper has investigated the traffic and speed in the typical cross section and empty driving status of current passenger cars,analyzed the statistical characteristics and time distribution of empty cars,and established the relationship model between the empty driving rate and traffic flows based on SPSS.The research result shows that the average empty driving rate of vehicles on the second ring road was about 58.26%,and it is higher than 50%within over 90%of the whole time period.The research demonstrates that the empty driving rate has a linear relationship with both the total traffic load on the road and passenger cars’traffic.