间隙式交通量观测站调整方案的原理与模型

Principle and model of adjusting interval traffic survey station

根据区域公路网联结形态,在对公路交通量观测站进行地域聚类的基础上,利用特征值理论研究每个类中各路段交通量之间的关系,发现类中各路段交通量具有稳定的比例关系;并根据历史数据应用最小二乘法求出比例系数向量。结果表明,根据类中一条道路的交通量数据可推算其余道路的交通量数据,从而达到缩减观测工作量的目的。

According to highway network's connecting form,the traffic survey stations can be divided into different kinds of group by their region features.The relationship of traffic volume at different roads that belong to same group was studied with characteristic value theory.It was found that the distribution rate of traffic volume in same group is stable.So the distribution rate can be induced from historical datum.If the traffic volume at one road is surveyed,the traffic volume at other roads in same group can be computed by the distribution rate,so the traffic volume survey work can be reduced.