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Review of U.S. Department of Transportation Truck Size and Weight Study: First Report: Review of Desk Scans (2014)

Chapter: Appendix B: Committee for Review of USDOT Truck Size and Weight Study Statement of Task

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Suggested Citation:"Appendix B: Committee for Review of USDOT Truck Size and Weight Study Statement of Task." National Academies of Sciences, Engineering, and Medicine. 2014. Review of U.S. Department of Transportation Truck Size and Weight Study: First Report: Review of Desk Scans. Washington, DC: The National Academies Press. doi: 10.17226/22416.
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Page 46

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45 Appendix B Committee for Review of USDOT Truck Size and Weight Study Statement of Task An ad hoc committee will provide a peer review of a comprehensive truck size and weight study that Congress required the U.S. Department of Transportation (USDOT) to conduct. The review will include two letter reports. The first will review “desk scan reports” (literature reviews) prepared by the Federal Highway Administration (FHWA) based on their thoroughness in reviewing the existing literature, analysis of existing models and data for conducting the comprehensive study, and overall synthesis of the preceding body of work as it applies to the study that is to follow. The desk scans are expected to be available for committee review in August–September 2013. Once FHWA has completed the technical analysis for the study in March 2014, the committee will prepare and issue its second and final report, commenting on the extent to which the technical analysis and findings address the issues identified by Congress. The committee’s second letter report will be due by May 1, 2014.

Next: Appendix C: Parties Submitting Comments to the Committee »
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The Committee for Review of U.S. Department of Transportation (USDOT) Truck Size and Weight Study has released its first of two reports. The Review of Desk Scans letter report reviews five preliminary products of the study of truck size and weight limits that the 2012 surface transportation authorization statute requires USDOT to carry out. The five preliminary products of the study, called desk scans, are surveys of past research and analysis methods for estimating the effects of changes in truck size and weight limits in each of five areas: bridges, pavements, truck and rail shares of freight traffic, safety, and enforcement of truck regulations.

The committee that produced the report recommends that USDOT continue the work begun in the desk scans by including two kinds of synthesis in its final report: first, a synthesis of experience in applying alternative methods of estimating each category of effect of changes in truck characteristics, leading to an assessment of the current state of understanding of the impact and needs for future research, data collection, and evaluation; and second, a critical synthesis of quantitative results of past prospective and retrospective estimates of each category of effect.

The results of these syntheses would inform the ability to reach firm conclusions about the consequences of changes in truck size and weight limits on safety, efficiency, infrastructure, and the environment.

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