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原文传递 Evaluation of Reference Markers; Interim research rept

题名：	Evaluation of Reference Markers; Interim research rept
作者：	Pigman, J. G.
关键词：	Highway signs; Mileposts; Visibility; Emergencies; Interstate highway; Sign standards; Kentucky; Ohio; Indiana; Evaluation; Freeways; Interstates
摘要：	The objective of this research evaluation was to evaluate the reference markers which were installed on sections of interstates and freeways in the Cincinnati-northern Kentucky area, the Lexington-Fayette Urban County area, the Louisville-southern Indiana area, and the Indianapolis area. The evaluation was conducted to determine if the use of reference markers at spacings of 0.1 or 0.2-mile intervals could improve the effectiveness of the emergency response and incident management processes. Also evaluated were color of the markers and the placement location within the right-of-way. Both 'white on blue' and 'white on green' markers were installed on various projects, with some installed on the median barrier wall and some on grass medians or shoulders. Included were condition surveys of the marker installations and opinion surveys of those involved in the incident or emergency management process.
总页数：	68p
报告类型：	科技报告