Reliability and Quality of Service Evaluation Methods for Rural Highways: A Guide
2024

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Rural highways account for a significant portion of the National Highway System and serve many vital mobility purposes. The Highway Capacity Manual, the standard reference for traffic analysis methodologies, contains analysis methodologies for all of the individual segments or intersections that may constitute a rural highway; however, it does not include a methodology or guidelines for connecting the individual roadway segments into a connected, cohesive, facility-level analysis.

NCHRP Research Report 1102: Reliability and Quality of Service Evaluation Methods for Rural Highways: A Guide, from TRB's National Cooperative Highway Research Program, presents a guide for traffic analysis of rural highways that connects the individual highway segments into a connected, cohesive, facility-level analysis.

Supplemental to the report is NCHRP Web-Only Document 392: Developing a Guide for Rural Highways: Reliability and Quality of Service Evaluation Methods.

Additional materials

Resources
Ohio Case Study
Oregon Case Study
Tennessee Case Study

Publication information

288 pages · 8.5 x 11 · paperback
ISBN Paperback: 0-309-70999-7
ISBN Ebook: 0-309-72399-X
DOI: https://doi.org/10.17226/27895

Suggested citation

National Academies of Sciences, Engineering, and Medicine. 2024. Reliability and Quality of Service Evaluation Methods for Rural Highways: A Guide. Washington, DC: The National Academies Press.

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Front Matter i-x
I Analysis Methodology 1-2
1 Introduction 3-7
2 Rural Highway LOS for Automobiles 8-33
3 Automobile Travel Time Reliability 34-47
4 Bicycle Operations Analysis on Rural Highways 48-66
II HCM7 Calculations 67-68
5 HCM7 Automobile LOS Methodologies 69-70
6 Multilane Highway Segment Analysis Methodology 71-80
7 Two-Lane Highway Segment Analysis Methodology 81-93
8 Signalized Intersection Analysis Methodology 94-101
9 Roundabout Intersection Analysis Methodology 102-106
10 All-Way Stop-Controlled Intersection Analysis Methodology 107-112
11 Urban Street Facility Analysis Methodology 113-117
12 BLOS Methodologies 118-121
13 Rural Highway Example Calculations 122-149
14 Computational Engine Overview 150-164
III Case Studies 165-166
15 Introduction 167-173
16 Case Study: Oregon US-20 174-202
17 Case Study: Tennessee SR-109 203-227
18 Case Study: Ohio US-42 228-255
19 Case Study: Montana US-287 256-265
Appendix: Mitigation Strategies 266-272
Bibliography 273-278

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Reliability and Quality of Service Evaluation Methods for Rural Highways: A Guide (2024)

Chapter: II HCM7 Calculations

PART II

HCM7 Calculations