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Suggested Citation:"Appendixes." National Academies of Sciences, Engineering, and Medicine. 2007. Final Report for NCHRP Report 581: Design of Construction Work Zones on High-Speed Highways. Washington, DC: The National Academies Press. doi: 10.17226/22044.
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Page 110

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APPENDIXES The following appendixes are not published herein, but are available online at www.trb.org/news/blurb_detail.asp?id=7363 • “Appendix A: Design of Construction Work Zones on High-Speed Highways.” This appendix has been published separately as NCHRP Report 581, which can be viewed or purchased at the above URL. • “Appendix B: Work Zone Speed Prediction Model and User’s Manual.” This appendix, which consists of a PDF and an Excel file, can be downloaded from the above URL.

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 Final Report for NCHRP Report 581: Design of Construction Work Zones on High-Speed Highways
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TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 105 is the contractor’s final report on the research activities used to develop NCHRP Report 581: Design of Construction Work Zones on High-Speed Highways. NCHRP Report 581 explores an approach for the selection of an appropriate construction work zone type; offers suggested guidance for the design of geometric features, including horizontal and vertical alignment, cross-sectional features, and barrier placement; and examines a variety of ancillary features such as drainage systems, lighting, and surface type. As part of the research associated with this activity, a work zone prediction model and user's guide was created to help estimate free-flow vehicle speeds through two types of construction work zones on four lane freeways--single lane closures and median crossovers.

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