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原文传递 Glossary of Highway Quality Assurance Terms. Fourth Update, May 2009.

题名：	Glossary of Highway Quality Assurance Terms. Fourth Update, May 2009.
关键词：	highway planning,traffic engineering,quality assurance,glossaries;highway construction, decision making, statistical analysis, roads, cost analysis;
摘要：	Highway quality assurance (QA), like many other specialized subject areas, has its own unique language containing numerous technical terms or expressions having very specific meanings. Some of these terms are not well understood, and their use is subject to a variety of different interpretations. The highway QA language, moreover, is continually changing to keep pace with advances in QA. As new terms come into general use, older terms must often be perceived in a new light. The terminology has grown and evolved steadily since the mid-1960s, when much of it was first introduced to the highway community; however, its growth and evolution have been to a large degree uncontrolled. This document contains terms of common usage and accepted practice. The Circular was generated by a subcommittee, chaired by Peter Kopac, of the Transportation Research Board (TRB) Committee on Management of Quality Assurance (AFH20). The purpose of this publication is to provide a reference document for usage of highway QA terminology. In developing this publication, the Committee reviewed the evolution of the highway QA language to date. It is the Committees hope that those who are involved in highway QA will use this publication to promote better communications. / Title Note: Transportation research circular. / Supplementary Notes: See also report dated Apr 02, PB2002-108920. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A04/MF A04 / NTIS In-house Control Codes: nastrb;12111,1101
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