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Rights & Permissions Free PDF Access Sign in to download PDF book and chapters Free Resources Display this book on your site! Related Titles NCHRP Report 509: Equipment for Collecting Traffic Load Data NCHRP Web Doc 13 Developing Measures of Effectiveness for Truck Weight Enforcement Activities:Final Report Other Related Titles NCHRP Report 538: Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design (2005) National Cooperative Highway Research Program (NCHRP) Citation Manager Export the bibliographic data for this book in your chosen format Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Citation Manager Transportation Research Board. "Glossary." NCHRP Report 538: Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design. Washington, DC: The National Academies Press, 2005. Please select a format: Page 54   E-mail Share on facebook Facebook Share on delicious Delicious Share on stumbleupon Stumble Share on twitter Twitter More Sharing ServicesMore Page 54 Front Matter (R1-R70) 1.1 Traffic Data Requirements for the Pavement Design Guide Software (1-1) 1.2 The Remainder of Part 2 (2-3) 2.0 Weight Data (4-5) 2.1 Sources of Estimation Error (6-7) 2.2 Alternative Data-Collection Programs (8-11) 2.3 Level 1 WIM Sites (12-16) 2.4 Level 2 WIM Sites and TWRGs (17-19) 2.5 Level 3 WIM Sites (20-20) 2.6 Weight Data Collection (21-22) 3.1 Levels of Classification Site (23-23) 3.2 Data Produced for the Pavement Design Guide Software (24-24) 3.3 Level 1 Classification Sites (25-33) 3.4 Level 2 Classification Sites (34-36) 3.5 Level 3 Classification Sites (37-38) 3.6 Forecasts (39-44) 4.1 Data Collection (45-46) 4.2 Data Analysis (47-51) 4.3 Administrative and Institutional Changes (52-53) Glossary (54-54) Levels of Classification Site (55-55) Levels of WIM Site (56-56) Abbreviations used without definitions in TRB publications (57-57)

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Glossary AADT Annual average daily traffic. AADTi Annual average daily traffic for vehicle class i. AADTT Annual average daily truck traffic (all classes, combined). AEPV Average ESALs per vehicle. ATR Automatic traffic recorder. AVC Automatic vehicle classifier. DDF Directional distribution factor. DOW Day-of-week. ESALs (18,000-pound) equivalent single-axle loads. HDF Hourly distribution factor. LDF Lane distribution factor. MADW Monthly average days of the week. TOD Time-of-day. TTC Truck traffic classification. TWRG Truck weight road group. VC Vehicle class. WIM Weigh-in-motion. 2-54