论文部分内容阅读
一、前言交通流量调查是城市交通研究、交通管理和道路规划设计的基础资料。过去现场观测汽车流量是靠人站在路旁用目数、手记的办法,不仅用人多而且误差大。特别是交通流量的调查,所需掌握的是一个路段或路口在一段较长的时间内的统计规律,要靠人工不分昼夜,不管刮风下雨,连续几周乃至数月到路旁观测是很难胜任和很难保证统计精度的。因此研制一种
I. Preface Traffic flow survey is the basic data of urban traffic research, traffic management and road planning and design. In the past, the on-site observation of traffic flow was based on the number of people standing by the roadside, handwriting approach, not only the number of people with large errors. In particular, traffic flow surveys need to grasp the statistical laws of a road section or intersection for a long period of time. It depends on artificial day and night, windy and rainy days, continuous roadside observation for several weeks or even several months It is hard to be competent and difficult to guarantee statistical accuracy. Therefore developed a