NCHRP Report 538:

Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design

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Size: 127 pages, 8.5 x 11

Publication Year:2005

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Transportation Research Board
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TRB's National Cooperative Highway Research Project (NCHRP) Report 538: Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design provides guidance for collecting traffic data to be used in pavement design and includes software—designated TrafLoad—for analyzing traffic data and producing ...
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Table of Contents
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Front Matter	i-lxx
1.1 Traffic Data Requirements for the Pavement Design Guide Software	1-1	(skim)
1.2 The Remainder of Part 2	2-3	(skim)
2.0 Weight Data	4-5	(skim)
2.1 Sources of Estimation Error	6-7	(skim)
2.2 Alternative Data-Collection Programs	8-11	(skim)
2.3 Level 1 WIM Sites	12-16	(skim)
2.4 Level 2 WIM Sites and TWRGs	17-19	(skim)
2.5 Level 3 WIM Sites	20-20	(skim)
2.6 Weight Data Collection	21-22	(skim)
3.1 Levels of Classification Site	23-23	(skim)
3.2 Data Produced for the Pavement Design Guide Software	24-24	(skim)
3.3 Level 1 Classification Sites	25-33	(skim)
3.4 Level 2 Classification Sites	34-36	(skim)
3.5 Level 3 Classification Sites	37-38	(skim)
3.6 Forecasts	39-44	(skim)
4.1 Data Collection	45-46	(skim)
4.2 Data Analysis	47-51	(skim)
4.3 Administrative and Institutional Changes	52-53	(skim)
Glossary	54-54	(skim)
Levels of Classification Site	55-55	(skim)
Levels of WIM Site	56-56	(skim)
Abbreviations used without definitions in TRB publications	57-57	(skim)

Description

TRB's National Cooperative Highway Research Project (NCHRP) Report 538: Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design provides guidance for collecting traffic data to be used in pavement design and includes software—designated TrafLoad—for analyzing traffic data and producing traffic data inputs required for mechanistic pavement analysis and design. The TrafLoad software is designed to produce traffic data for input to the 2002 AASHTO pavement design software. TrafLoad is based on a new mechanistic-empirical approach to pavement design, it relies on axle load spectra rather than equivalent single axle loads. For each of four axle types, the load spectra specify the percentages of axles falling into each of several load ranges.

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NCHRP Report 538:

Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design

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