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A New Approach to network Wide Turning Movement Surveys

机译：网络宽转弯测量的一种新方法

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Improved traffic detection and increasing computer processing capabilities present a unique opportunity for traffic engineers and researchrs to develop real-time predictive models. These models demand new data collection techniques which provide the level of accuracy required for validation and calibration. Automated collection of turning movements at an intersection is difficult and expensive. Accurate observation of the turning movements of a complex intersection is a relatively straight forward process providing a reliable surveyor is equipped with a proprietary data logging device. Simultaneous observation of sets of turning movements throughout a network, however, is not so easy. Many observers collecting data complicate the data entry and collation process. The use of video surveillance and subsequent collection and verification of turning movements collected at a later time has been used to reduce the number of surveyors required and provide a verifying record of the turning movements. This technology has problems of its own including determining a suitable location for video surveillance such that all movements are collected accurately and without being obscured by other vehicles and difficulties in night conditions. This paper is a description of how a network wide turning movement survey technique was tested, improved and eventually implemented both for a manual survey and a video survey. The paper describes how a series of pilot surveys served to defien the structure and organization of the final survey, or "Survey Proper". An explanation of how innovative booking sheets evolved for the manual survey is followed by an account of how subsequent surveys modified the technique. The paper concludes with some critical comments that suggest how future surveys may be designed and discusses the benefits and disadvantages of video versus manual turning movement surveys.
机译：改进的交通检测和增强的计算机处理能力为交通工程师和研究人员提供了开发实时预测模型的独特机会。这些模型需要新的数据收集技术，以提供验证和校准所需的准确度。在交叉路口自动收集转弯运动既困难又昂贵。如果可靠的测量员配备有专有的数据记录设备，则准确观察复杂路口的转弯运动是一个相对简单的过程。然而，同时观察整个网络中的转弯运动并非易事。许多收集数据的观察者使数据输入和整理过程变得复杂。使用视频监视以及随后收集和验证稍后收集的转弯动作已被用于减少所需的测量员数量并提供转弯动作的验证记录。该技术有其自身的问题，包括确定用于视频监视的合适位置，以使所有运动被准确地收集并且不会被其他车辆遮挡和在夜间条件下困难。本文描述了如何测试，改进和最终实现针对手动测量和视频测量的全网转弯运动测量技术。本文描述了一系列试点调查如何定义最终调查的结构和组织，即“适当调查”。在对人工调查的创新预订单如何演变的解释之后，说明了后续调查如何修改了该技术。本文以一些重要的评论作为结尾，这些评论提出了如何设计未来的调查，并讨论了视频与手动转弯运动调查相比的利弊。

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