摘要
移动检测技术是智能交通系统中实时获取交通信息的重要手段之一.介绍了移动检测技术的概念及优缺点,对当前移动检测技术中的关键问题:如检测车辆占车流的百分比,利用移动检测技术估计和预测的交通指标以及估计、预测方法作了详细介绍,指出如何确定检测车在车流中所占百分比,利用该技术对旅行速度、旅行时间进行估计和预测,以及基于链路的估计、预测方法优于基于路段的估计、预测方法.
The probe vehicle techniques discussed here are one of the typically intelligent transportation system (ITS) applications designed primarily for collecting data in real_time. In this paper,concept, advantages and disadvantages of probe vehicle techniques are introduced. Some key problems are presented particularly, such as percentage of probe vehicles, estimation and prediction indices by probe vehicle, as well as the estimation and prediction methods. In conclusion, how to determine probe vehicle sample sizes is pointed out. Travel speed and travel time are main estimation and prediction indices, and direct measuring of path_based travel time rather than link_based travel times could generate a more accurate result.
出处
《北方交通大学学报》
CSCD
北大核心
2003年第3期80-83,共4页
Journal of Northern Jiaotong University
基金
教育部优秀青年教师资助计划项目
关键词
移动检测车
智能交通系统
全球卫星定位系统
旅行时间
旅行速度
probe vehicle
intelligent transportation system(ITS)
global position system(GPS)
travel time
travel speed
