Glossary of Transportation Construction Quality Assurance Terms: Seventh Edition

TRB's E-Circular 235: Glossary of Transportation Construction Quality Assurance Terms: Seventh Edition contains common terms and accepted practice in transportation construction quality assurance terminology. Transportation construction 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 transportation construction 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. This report, published in 2018, provides an update to TRB's E-Circular 173, which was published in 2013.