Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets

National Academies of Sciences, Engineering, and Medicine

doi:10.17226/25963

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Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets

(2020)

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The procedures detailed in the 6th Edition of the Highway Capacity Manual (HCM) estimate capacity and several operational measures, including those determining Level of Service, for freeway facilities as well as surface streets.

The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 290: Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets introduces materials to help modify the freeway analysis methods and the urban street methods so that the effects of operations from one facility to the other can be evaluated.

Contributor(s): National Academies of Sciences, Engineering, and Medicine; Transportation Research Board; National Cooperative Highway Research Program; University of Florida Transportation Institute; Cambridge Systematics; Alex Skabardonis

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2020. Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets. Washington, DC: The National Academies Press. https://doi.org/10.17226/25963.

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Publication Info

390 pages | 8.5 x 11 | DOI: https://doi.org/10.17226/25963

Chapters		skim
Front Matter	1-3
Table of Contents	4-6
Summary	7-8
1. Introduction	9-9
2. Literature Review	10-13
3. Critical Review of the HCM	14-17
4. Performance Measures	18-19
5. Queue Spillback into Freeways	20-32
6. Queue Spillback into Urban Streets	33-40
7. Lane-by-Lane Speed and Flow Estimation Methods for Freeways	41-46
8. System Analysis	47-48
9. Software Implementation	49-48
10. Conclusions and Recommendations	49-50
References	51-52
Appendix A: Chapter 38 System Analysis	53-237
Appendix B: Off-Ramp Queue Spillback Check	238-250
Appendix C: Freeway Off-Ramp Queue Spillback Analysis	251-298
Appendix D: On-Ramp Queue Spillback Check	299-309
Appendix E: On-Ramp Queue Spillback Analysis	310-356
Appendix F: Freeway Facilities Lane-by-Lane Analysis	357-383
Appendix G: Glossary	384-389

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