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原文传递 Automated Calculation of Passing Sight Distance Using Global Positioning System Data

题名：	Automated Calculation of Passing Sight Distance Using Global Positioning System Data
作者：	Namala, S. R.; Rys, M. J.
关键词：	Global positioning systems##Highway design##Sight distances##Visibility##Accident data##Mathematical models##Accident analysis##Highway characteristics##Data analysis##Pavement markings##Rural roads##Automated calculations##Passing sight distances##Passing zone markings##
摘要：	Most of the rural highways in the United States of America are two-lane, two-way highways. In order to ensure smooth flow of traffic, maximum-passing opportunities must be provided on these highways, where the fast moving vehicles can overtake slow mowing vehicles. However, due to the geometric characteristics of the highways and cost limitations, passing opportunities cannot be provided throughout the length of the entire highway. Hence there is a need to find the segments of the highway that are not safe for overtaking called no passing zones. The accurate placement of no passing zones on two-lane highways is critical to ensure safety of the travelers and also to protect the department of transportations of various states from lawsuits. Literature review shows that current methods used to mark the passing zones and no passing zones are very tedious and time consuming. The objective of this study was to develop a suitable model for measuring passing sight distance on two-lane, two-way highways using Global Positioning System (GPS) data and identify no passing zones.
总页数：	77
报告类型：	科技报告