2010 Highway Capacity Manual


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  • A Look Ahead to the 2010 HCM Kittelson & Associates, Inc.
  • A Look Ahead to the 2010 HCM Kittelson & Associates, Inc.
  • A Look Ahead to the 2010 HCM Kittelson & Associates, Inc.
  • 4 4
  • 2010 Highway Capacity Manual

    1. 1. A Look Ahead to the 2010 HCM Mark Vandehey, PE February 4, 2010
    2. 2. Presentation Overview <ul><li>Introduction </li></ul><ul><li>Summary of significant changes </li></ul><ul><li>Overall organization </li></ul><ul><li>Conclusion </li></ul>
    3. 3. NCHRP 3-92 – Production of the 2010 HCM <ul><li>HCM’s 5 th Major Revision (1950, 1965, 1985, 2000) </li></ul><ul><li>Project began in October 2007 </li></ul><ul><li>Chapters delivered to TRB between July 2009 and March 2010 </li></ul><ul><ul><li>Currently 95% Complete </li></ul></ul><ul><li>Scheduled for publication by TRB by the end of 2010 </li></ul><ul><li>Key tasks: </li></ul><ul><ul><li>State of the Art Review and Inventory </li></ul></ul><ul><ul><li>Focus Groups </li></ul></ul><ul><ul><li>Supplemental Research for 2010 HCM </li></ul></ul><ul><ul><li>Prepare Draft Chapters </li></ul></ul><ul><ul><li>Assist TRB During Publication Process </li></ul></ul>
    4. 4. Outreach to Professionals <ul><li>Focus groups on the HCM2000 early in the project </li></ul><ul><ul><li>Mix of perspectives (DOT, city/county, consultants, academia) </li></ul></ul><ul><li>Website for HCQS Committee members and friends </li></ul><ul><ul><li>Research reports supporting new HCM content </li></ul></ul><ul><ul><li>Issue papers on HCM organization, objectives, content </li></ul></ul><ul><ul><li>Review and comment on draft chapters </li></ul></ul><ul><ul><li>Research team responses to comments </li></ul></ul><ul><li>Presentations like this one </li></ul>
    5. 5. Presentation Overview <ul><li>Introduction </li></ul><ul><li>Summary of significant changes </li></ul><ul><li>Overall organization </li></ul><ul><li>Conclusion </li></ul>
    6. 6. Summary of Significant Changes <ul><li>Incorporation of New Research </li></ul><ul><li>Integrated Multimodal Approach </li></ul><ul><li>Increased Emphasis of Alternative Tools </li></ul><ul><li>New Chapter on Active Traffic Management </li></ul>
    7. 7. Incorporation of New Research <ul><li>NCHRP 3-60 (Interchange Ramp Terminals) </li></ul><ul><li>NCHRP 3-64 (HCM Applications Guide) </li></ul><ul><li>NCHRP 3-65 (Roundabouts in the United States) </li></ul><ul><li>NCHRP 3-70 (Multi-Modal Arterial LOS) </li></ul><ul><li>NCHRP 3-75 (Freeway Weaving) </li></ul><ul><li>NCHRP 3-79 (Arterial Travel Speeds) </li></ul>
    8. 8. Incorporation of New Research (cont’d.) <ul><li>NCHRP 3-82 (Default Values for HCM) </li></ul><ul><li>NCHRP 3-85 (Guidelines for the Use of Alternative Traffic Analysis Tools) </li></ul><ul><li>NCHRP 20-7 (Two-Lane Highways) </li></ul><ul><li>FHWA Research on Active Traffic Management </li></ul><ul><li>NCHRP 3-92 supplemental research </li></ul><ul><ul><li>Signalized Intersection Methodology (new delay method and structure changes reflecting actuated control) </li></ul></ul><ul><ul><li>Gap acceptance for six-lane, two-way stop-controlled Intersections </li></ul></ul><ul><ul><li>75 mph speed-flow curve for freeways </li></ul></ul>
    9. 9. Multimodal LOS Measure Issues <ul><li>HCM 2010 will consider a broader range of factors for ped and bike analysis </li></ul><ul><li>Current HCM method focuses on speed, delay, and space </li></ul><ul><li>Florida & NCHRP 3-70 research suggest these aren’t the key factors </li></ul><ul><li>Auto volumes highly important to bike & ped service quality </li></ul>HCM2000: Ped LOS A HCM2000: Ped LOS D
    10. 10. Vision for 2010 HCM - Interrupted Flow Facilities <ul><li>Multimodal Evaluation </li></ul><ul><ul><li>Emphasize combined evaluation of auto, ped, bike, and transit </li></ul></ul>Pedestrian LOS Automobile LOS Bicycle LOS Transit LOS Interactions FDOT Quality/LOS Handbook 2002
    11. 11. MMLOS Urban Street Applications <ul><li>Segments </li></ul><ul><ul><li>All four modes </li></ul></ul><ul><li>Signalized Intersections </li></ul><ul><ul><li>Auto, ped and bike mode </li></ul></ul><ul><li>Facility </li></ul><ul><ul><li>All four modes </li></ul></ul>segment facility
    12. 12. 2010 HCM Approach <ul><li>Focus on the traveler perspective </li></ul><ul><li>Allow trade-offs between modes to be evaluated </li></ul><ul><li>Presence of one mode affects other modes </li></ul>Mode Affected Impacting Mode Auto Ped Bike Transit Auto Auto & HV volumes Turning patterns Lane configurations Minimum green time Turn conflicts Mid-block crossings Turn conflicts Passing delay Heavy vehicle Blocking delay Signal priority Ped Auto & HV volumes Cycle length Driver yielding Turn conflicts Traffic separation Sidewalk crowding Crosswalk crowding Cross-flows Shared-path conflicts Bicyclist yielding Heavy vehicle Transit stop queues Stop cross-flows Vehicle yielding Bike Auto & HV volumes Auto & HV speed On-street parking Turn conflicts Traffic separation Shared-path conflicts Min. green time Turn conflicts Mid-block xings Bike volumes Heavy vehicle Blocking delay Tracks Transit Auto volumes Signal timing Ped. env. quality Minimum green time Turn conflicts Mid-block crossings Bike env. quality Bike volumes Bus volumes
    13. 13. Service Measures in the 2010 HCM System Element Service Measure Provided Chapter Auto Ped Bike Transit Freeway Facility 10  Basic Freeway Segment 11  Freeway Weaving Segment 12  Fwy. Merge/Diverge Seg. 13  Multilane Highway 14   Two-Lane Highway 15   Urban Street Facility 16     Urban Street Segment 17     Signalized Intersection 18    Two-Way Stop 19   All-Way Stop 20  Roundabout 21  Interchange Ramp Term. 22  Off-Street Ped-Bike Facility 23  
    14. 14. More Emphasis on Alternative Tools <ul><li>Explicit recognition that HCM analytical procedures may not always be the best procedure </li></ul><ul><li>Range of alternative tools </li></ul><ul><ul><li>Deterministic tools (e.g., TRANSYT-7F for arterial performance) </li></ul></ul><ul><ul><li>Stochastic tools (e.g., VISSIM for network performance) </li></ul></ul><ul><li>Examples of applications </li></ul>
    15. 15. Alternative Tool Example: Backup from Signal Mainline vehicles unable to reach the exit lanes Wasted time on the signal approach
    16. 16. Active Traffic Management (ATM) <ul><li>New ATM Chapter </li></ul><ul><li>Describes ATM measures </li></ul><ul><li>Provides known information/methods for evaluating impacts </li></ul><ul><li>Advises on appropriateness of HCM and simulation methods </li></ul><ul><li>Identifies strategies for maximizing return on investment </li></ul><ul><li>Identifies innovative strategies </li></ul>
    17. 17. Lane and Shoulder Treatments FHWA Managed Lanes Primer Google Street View
    18. 18. Congestion Pricing <ul><li>FHWA, MinnDOT </li></ul><ul><ul><li>Technologies that Complement Congestion Pricing Primer </li></ul></ul><ul><li>Congestion Pricing Primer </li></ul>
    19. 19. Innovative Interchange Designs
    20. 20. High Capacity Intersection Designs
    21. 21. Presentation Overview <ul><li>Introduction </li></ul><ul><li>Summary of significant changes </li></ul><ul><li>Overall organization </li></ul><ul><li>Conclusion </li></ul>
    22. 22. HCM Evolution <ul><li>HCM scope has grown over time </li></ul><ul><ul><li>Increasing coverage of various system elements and modes </li></ul></ul><ul><ul><li>User interest in more-detailed procedures </li></ul></ul><ul><li>HCM page count has grown correspondingly </li></ul><ul><ul><li>1950: 160 pages </li></ul></ul><ul><ul><li>1965: 432 pages </li></ul></ul><ul><ul><li>1985: 512 pages </li></ul></ul><ul><ul><li>2000: 1,224 pages </li></ul></ul>
    23. 23. Overall Organization <ul><li>The 2010 HCM will consist of four volumes </li></ul><ul><ul><li>Volume 1: Concepts </li></ul></ul><ul><ul><li>Volume 2: Uninterrupted Flow </li></ul></ul><ul><ul><li>Volume 3: Interrupted Flow </li></ul></ul><ul><ul><li>Volume 4: Applications Guide </li></ul></ul>
    24. 24. Overall Organization of HCM 2010 Volume Target Audience Format % Total Printed Pages I: Concepts New analysts and decision makers Bound & PDF 20 II: Uninterrupted Flow Facilities Analysts Loose leaf & PDF 30 III: Interrupted flow Facilities Analysts Loose leaf & PDF 50 IV: Applications Guide and Supplemental Material Analysts, software engineers, and researchers Live/On-line N/A
    25. 25. Volume 1 Concepts <ul><li>Front Matter </li></ul><ul><li>1. HCM User’s Guide </li></ul><ul><li>2. Applications </li></ul><ul><li>3. Modal Characteristics </li></ul><ul><li>4. Traffic Flow & Capacity Concepts </li></ul><ul><li>5. Traveler Perception Concepts </li></ul><ul><li>6. Analysis Tools </li></ul><ul><li>7. Interpreting & Presenting Results </li></ul><ul><li>8. Executive Summary/Policy Considerations </li></ul><ul><li>9. Glossary & Symbols </li></ul><ul><li>Volume 1 Index </li></ul>
    26. 26. Chapter 8 <ul><li>Executive summary of the HCM for decision-makers </li></ul><ul><li>Outline: </li></ul><ul><ul><li>Highway capacity concepts for decision-makers </li></ul></ul><ul><ul><li>QOS concepts for decision-makers </li></ul></ul><ul><ul><li>Analysis process </li></ul></ul><ul><ul><ul><li>Levels of analysis, analysis tool selection, HCM methodologies, interpreting results </li></ul></ul></ul><ul><ul><li>Decision-making considerations </li></ul></ul><ul><ul><ul><li>Tools vs. standards, HCM methodology evolution, variations in user satisfaction, role of companion documents </li></ul></ul></ul><ul><ul><ul><li>Consider more than LOS! </li></ul></ul></ul>
    27. 27. Volume 2 Uninterrupted Flow <ul><li>How to Use Volume 2 </li></ul><ul><li>10. Freeway Facilities </li></ul><ul><li>11. Basic Freeway Segments </li></ul><ul><li>12. Freeway Weaving Segments </li></ul><ul><li>13. Ramps & Ramp Junctions </li></ul><ul><li>14. Multilane Highways </li></ul><ul><li>15. Two-Lane Highways </li></ul><ul><li>Volume 2 Index </li></ul>Photo: Lee Rodegerdts
    28. 28. HCM2010 Updates Chapter 10: Freeway Facilities <ul><li>Incorporates all Freeway Chapter Changes, plus </li></ul><ul><li>Definition of Average Facility Density </li></ul><ul><li>LOS Measure and Table </li></ul><ul><li>Increased Emphasis on Impacts of Weather and Work Zones </li></ul>
    29. 29. Methodology <ul><li>Macroscopic Method by Segment </li></ul><ul><ul><li>Basic Freeway Segments </li></ul></ul><ul><ul><li>Weaving Segments </li></ul></ul><ul><ul><li>On-ramp and Off-Ramp Segments </li></ul></ul><ul><li>Directional Methodology </li></ul><ul><li>Extended Time-Space Domain </li></ul><ul><ul><li>Distinguish Demand and Volume </li></ul></ul><ul><ul><li>Queue Interaction between segments and time periods </li></ul></ul><ul><li>Two Flow Regimes </li></ul><ul><ul><li>Undersaturated ( all d/c<1.0) </li></ul></ul><ul><ul><li>Oversaturated ( any d/c>1.0) </li></ul></ul><ul><li>Implemented in FREEVAL2010 </li></ul>
    30. 30. Time-Space Domain S1 T2 T3 T4 T5 T1 S4 S5 S6 S7 S8 S2 S3
    31. 31. Inputs and Outputs <ul><li>Inputs </li></ul><ul><ul><li>Geometry (from Google or CAD) </li></ul></ul><ul><ul><li>Jam density </li></ul></ul><ul><ul><li>Free-flow speed and ramp speeds </li></ul></ul><ul><ul><li>Truck percentage (can vary) </li></ul></ul><ul><ul><li>15-minute demand flows </li></ul></ul><ul><li>Output </li></ul><ul><ul><li>Speed, Density, Travel Time, Capacity, Throughput </li></ul></ul><ul><ul><li>Segment Measures also include LOS </li></ul></ul><ul><ul><li>Facility Aggregation by Time Interval </li></ul></ul><ul><ul><li>Detailed output Worksheets... </li></ul></ul><ul><ul><li>3-D plots of selected outputs </li></ul></ul>
    32. 32. Facility and Segments Directional Facility Segment Number 1 2 3 4 5 6 7 8 9 10 11 Segment Type B ONR B OFR B B or W B ONR R OFR B Segment Length (ft.) 5280 1500 2280 1500 5280 2640 5280 1140 360 1140 5280 No. Lanes 3 3 3 3 3 4 3 3 3 3 3
    33. 33. FREEVAL Output Screens
    34. 34. FREEVAL Output Graphs
    35. 35. FREEVAL Output Tables (LOS)
    36. 36. Volume 3 Interrupted Flow <ul><li>How to Use Volume 3 </li></ul><ul><li>16. Urban Street Facilities </li></ul><ul><li>17. Urban Street Segments </li></ul><ul><li>18. Signalized Intersections </li></ul><ul><li>19. Two-Way Stop-Controlled Intersections </li></ul><ul><li>20. All-Way Stop-Controlled Intersections </li></ul><ul><li>21. Roundabouts </li></ul><ul><li>22. Interchange Ramp Terminals </li></ul><ul><li>23. Off-Street Pedestrian & Bicycle Facilities </li></ul><ul><li>Volume 3 Index </li></ul>Photo: Lee Rodegerdts
    37. 37. Chapter 22 Interchange Ramp Terminals <ul><li>Additional Lost Time Procedure </li></ul><ul><ul><li>Reduction in effective green period </li></ul></ul><ul><ul><li>Two causes for reduction </li></ul></ul><ul><ul><ul><li>Queue spillback </li></ul></ul></ul><ul><ul><ul><li>Demand starvation </li></ul></ul></ul><ul><li>Lost Time Due to Queue Spillback </li></ul>Northbound incurs additional lost time
    38. 38. Volume 4 <ul><li>Electronic-only </li></ul><ul><li>12 chapters </li></ul><ul><li>New Chapter on Active Traffic Management </li></ul><ul><li>Supplemental chapters </li></ul><ul><ul><li>Target audience: </li></ul></ul><ul><ul><ul><li>Users who seek a greater depth of understanding </li></ul></ul></ul><ul><ul><ul><li>Users who plan to develop HCM implementation software </li></ul></ul></ul><ul><ul><li>Sensitivity analyses, statistics on methodological uncertainty, data collection forms, some worksheets </li></ul></ul><ul><ul><li>Example problems and computational results </li></ul></ul><ul><li>Updated HCM Applications Guide </li></ul><ul><li>Technical Reference Library </li></ul><ul><li>Interpretations & clarifications </li></ul>
    39. 39. Style <ul><li>Similar to HCM2000, Transit Capacity and Quality of Service Manual, and the Highway Safety Manual </li></ul><ul><ul><li>Better use of margin space </li></ul></ul><ul><ul><li>More efficient graphics layout </li></ul></ul><ul><ul><li>Facilitates hyperlinking in the electronic version </li></ul></ul>
    40. 40. Presentation Overview <ul><li>Introduction </li></ul><ul><li>Summary of significant changes </li></ul><ul><li>Overall organization </li></ul><ul><li>Conclusion </li></ul>
    41. 41. Conclusion <ul><li>The 2010 HCM will incorporate the results of more than $5 million in funded research since the HCM2000 </li></ul><ul><li>It incorporates a number of changes desired by the user community </li></ul><ul><li>It continues the HCM’s (and the user community’s) evolution toward a more multimodal approach to addressing transportation issues </li></ul><ul><li>It is designed to continue to be relevant to users in an age of increasing reliance on software tools </li></ul>
    42. 42. Thank you! <ul><li>Mark Vandehey </li></ul><ul><li>[email_address] </li></ul>