公路网OD调查涉外数据处理方法研究

根据区域公路网OD调查分析的需要,介绍了交通调查数据的主要处理过程和内容。就其中涉外数据的编码问题做了详细研究:对传统的对外交通小区的划分方法作了改进,并考虑了不同交通小区系统转换的问题,基于驾驶员的出行行为提出了过境出入口逻辑性判定规则,从而提出了一种基于出入口划分对外小区系统理论的新算法,探讨了算法的准备工作和误差校正方法。实例验证表明:此算法能够保证出入口模拟交通量(用户平衡配流)与现状调查数据的一致性,最大误差不超过1%。

A Method for Processing of Egress Traffic Data Collected by Regional Highway Network OD Study

The external and transit traffics are two important indexes in reflecting the regional traffic location.For the demands of OD study of regional highway network,the contents of data processing collected by traffic investigation were discussed.The detail process of data-encoding was presented:improvements in external traffic zone division were made,and the conversion from traditional traffic zone system to the new one was studied.The logical judging rule for entrance and exit was put forward based on the travel behavior of drivers,and a new algorithm based on the new traffic zone system was then put forward.The preparations and error correction method were also discussed.An application example shows that the algorithm ensurs the consistency of traffic assignment results(User-Optimized Equilibrium model) with investigation data of regional passageways,the maximum error percentage is less than 1%.