KENTUCKY TRANSPORTATION CENTER

Research Report KTC-11-19/SPR415-11-1F KENTUCKY TRANSPORTATION CENTER GUIDELINES FOR ROAD DIET CONVERSIONS

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R GUIDELINES FOR ROAD DIET CONVERSIONS Draft Final Report

1. Report Number KTC-11-XX / SPR-415-11-1F 2. Government Accession No. 3. Recipient s Catalog No. 4. Title and Subtitle Guidelines for Road Diet Conversions 5. Report Date November 2011 6. Performing Organization Code 7. Author(s) N. Stamatiadis, A. Kirk, C. Wang, and A. Cull 9. Performing Organization Name and Address Kentucky Transportation Center College of Engineering University of Kentucky Lexington, Kentucky 40506-0281 12. Sponsoring Agency Name and Address Kentucky Transportation Cabinet 200 Mero Street Frankfort, KY 8. Performing Organization Report No. KTC-11-XX / SPR-415-11-1F 10. Work Unit No. 11. Contract or Grant No. SPR316 13. Type of Report and Period Covered: Final Report; 07/10 12/11 Fi l 14. Sponsoring Agency Code 15. Supplementary Notes 16. Abstract 17. Key Words Intersection Design, Roundabout, Inside left-turn, median u-turn, superstreet, continuous flow, jughandle, bowtie, intersection evaluation 18. Distribution Statement Unlimited 19. Security Classification (report) Security Classification (this page) 21. No. of Pg: 94 22. Price $0

TABLE OF CONTENTS LIST OF FIGURES

LIST OF TABLES

TABLE OF CONTENTS LIST OF FIGURES

LIST OF TABLES

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LIST OF TABLES

EXECUTIVE SUMMARY

INTRODUCTION

LITERATURE REVIEW

METHODOLOGY

RESULTS Signalized Intersections negative lower

negative shorter

Unsignalized Intersections

negativelower

Operations Models

Signalized Intersection Safety

Unsignalized Intersection Safety

Safety Models

Summary

CASE STUDIES US 27 Campbell County Euclid Ave. Fayette County KY 1428 Floyd County US 172 Mercer County

US 60 Woodford County

Summary

GUIDELINES Road Diet Conversions

CONCLUSIONS AND SUMMARY

REFERENCES Road Diets: Fixing the Big Roads Evaluation of Lane Reduction Road Diet Measures and Their Effects of Crashes and Injuries Evaluation of Lane Reduction Road Diet Measures on Crashes Manual on Uniform Traffic Control Devices Paper No. 07-1918 Transportation Research Record 2165 Surrogate Safety Assessment Model and Validation: Final Report, Transportation Research Record 1784 ) Guidelines for the Conversion of Urban Four-Lane Undivided Roadways to Three-Lane Two-Way Left-Turn Lane Facilities Final Report Transportation Research Record 644 Journal of the Transportation Research Board No. 1953 Road Diet handbook: Setting Trends for Livable Communities Proceedings 3rd International Symposium on Highway Geometric Design

Highway Capacity Manual Transportation Research Board Urban Street Symposium

APPENDIX A

ROAD DIET CASE STUDY EVALUATION US 60 VERSAILLES, KY (FINAL) REPORT Prepared by Prepared for: Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

ROAD DIET IMPLEMENTATION Figure 2. Figure 2: Typical Sections Figure 3 Figure 4.

Figure 3: Road Diet Cross-Section Figure 4: US 60 with Standard Road Diet Figure 5.

Figure 5: US 60 with Added Shoulders Figure 6 Figure 7 Figure 6: US 60 with Parking

Figure 7: US 60 Road Diet Types and Locations

RESULTING CONDITIONS Travel Times Table 1 Table 1: Travel Time Study Crash History Table 2 Table 3 Table 2.

Table 2: Pre- Road Diet Three-Year Crash Summary (2005-2007) Total 39 15 24 Table 3: Post- Road Diet Three-Year Crash Summary (2009-2010) Total 49 16 33

EVALUATION METHODOLOGY Safety Evaluation Operations Evaluation

EVALUATION SUMMARY Table 4 Table 4: Summary of Road Diet Installation Effects

ROAD DIET CASE STUDY EVALUATION EUCLID AVE. LEXINGTON, KY (FINAL) REPORT Prepared by Prepared for: Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

ROAD DIET IMPLEMENTATION Figure 2. Figure 2: Typical Section Figure 3

Figure 3: Road Diet Cross-Section Figure 4. Figure 4: Euclid Post-Road Diet Transformation

RESULTING CONDITIONS Travel Times Table 1 Table 1: Travel Time Study Crash History Table 2 Table 3 Table 2.

Table 2: Pre- Road Diet Three-Year Crash Summary (1997-1999) Total 236 140 96 Table 3: Post- Road Diet Three-Year Crash Summary (2001-2003) Total 104 49 55

EVALUATION METHODOLOGY Safety Evaluation Operations Evaluation

EVALUATION SUMMARY Table 4 Table 4: Summary of Road Diet Installation Effects

ROAD DIET CASE STUDY EVALUATION US 27 CAMPBELL COUNTY, KY (FINAL) REPORT Prepared by Prepared for: Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

ROAD DIET IMPLEMENTATION Figure 2. Figure 2: Typical Section Figure3 Figure 3: Road Diet Cross-Section

Figures 4 5. Figure 4: US 27 Post-Road Diet Transformation (Near Ends with More Entrances) Figure 5: US 27 Post-Road Diet Transformation (In Middle with Few Entrances)

RESULTING CONDITIONS Travel Times Table 1 Table 1: Travel Time Study Crash History Table 2 Table 3 Table 2.

Table 2: Pre- Road Diet Three-Year Crash Summary (2005-2007) Total 60 15 47 Table 3: Post- Road Diet Three-Year Crash Summary (2009-2010) Total 19 1 18

EVALUATION METHODOLOGY Safety Evaluation Operations Evaluation

EVALUATION SUMMARY Table 4 Table 4: Summary of Road Diet Installation Effects

ROAD DIET CASE STUDY EVALUATION KY 1428 FLOYD COUNTY, KY (FINAL) REPORT Prepared by Prepared for: Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

ROAD DIET IMPLEMENTATION Figure 2 and Figure 3. Figure 2: Initial Four Lane Section (North of KY 114) Figure 3: Initial Two Lane Section (South of KY 114)

Figure 4 Figure 5 Figure 4: Road Diet Cross-Section (North of 114) Figure 5: Road Diet Cross-Section (South of 114) Figures 6 Figure 7.

Figure 6: KY 1428 Post-Road Diet Transformation Figure 7: KY 1428 Post-Road Diet Transformation (Transition from Two Lanes)

RESULTING CONDITIONS Travel Times Table 1 Table 1: Travel Time Study Crash History Table 2 Table 3 Table 2.

Table 2: Pre- Road Diet Three-Year Crash Summary (2002-2004) Total 115 17 98 Table 3: Post- Road Diet Three-Year Crash Summary (2007-2009) Total 52 12 40

EVALUATION METHODOLOGY Safety Evaluation Operations Evaluation

EVALUATION SUMMARY Table 4 Table 4: Summary of Road Diet Installation Effects

ROAD DIET CASE STUDY EVALUATION US 127 HARRODSBURG, KY (FINAL) REPORT Prepared by Prepared for: Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

ROAD DIET IMPLEMENTATION Figure 2. Figure 2: Typical Section Figure3 Figure 3: Road Diet Cross-Section

Figure 4. Figure 4: US 127 Post-Road Diet Transformation

RESULTING CONDITIONS Travel Times Table 1 Table 1: Travel Time Study Crash History Table 2 Table 3 Table 2.

Table 2: Pre- Road Diet Three-Year Crash Summary (2003-2005) Total 164 89 75 Table 3: Post- Road Diet Three-Year Crash Summary (2007-2009) Total 97 36 61

EVALUATION METHODOLOGY Safety Evaluation Tables 2 3 Operations Evaluation

EVALUATION SUMMARY Table 4 Table 4: Summary of Road Diet Installation Effects

Prepared by Prepared for: ROAD DIET CASE STUDY EVALUATION KY 74 MIDDLESBORO, KY KYTC DISTRICT 11 FINAL REPORT Date:

TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES

INTRODUCTION Figure 1 Figure 1: Study Area

EXISTING CONDITIONS Figure 2 Figure 2: Typical Section Appendix A Traffic Volumes Appendix B Appendix B.

Travel Times Table 1 Table 1: Travel Time Study Westbound Total 48 47 43 Eastbound Total 51 49 52 Crash History Table 2

Table 2: Three-Year Crash Summary (2007-2009) Total 135 100 35 Appendix C

ROAD DIET ALTERNATIVE Figure 3 Figure 3: Typical Cross-Section

EVALUATION METHODOLOGY Calibration Table 3 Table 3: VISSIM Travel Time Calibration Westbound Total 48 47 47 49 43 54 Eastbound Total 51 50 49 51 52 59

Measures of Effectiveness

RESULTS Operational Analysis Table 4 Table 4: Travel Time Corridor Level Travel Segment (KY 74) Travel Time(sec) AM Noon PM 4-Lane 3-Lane 4-Lane 3-Lane 4-Lane 3-Lane Westbound Total 47 41 49 40 54 49 Eastbound Total 50 50 51 50 59 54 Table 5

Table 5: PM Peak Hour Intersection Operations Summary Safety Analysis Table 6

Table 6: Safety Effects of Road Diet Total 27-11 -

DESIGN CONSIDERATIONS Figure 4

EVALUATION SUMMARY Table 7 Table 7: Summary of Road Diet Installation Effects

APPENDIX A Existing Conditions

APPENDIX B Traffic Volumes

482 470 476 476 4 10 10 14, 2, 2 31, 9, 18 22nd 21st Street 20 th 33, 16, 25 6 454 22 4 4 4 4 44 500 9 3, 8, 4 15 453 8 20 476 10 6, 1 10 10 541 553 506 506 50 CODE 934 STORE ITE CODE 935 6 ING ITE CODE 210

FITZPATRICK 485 506 506 656 6, 39, 5 2, 1, 7 4 452 50 3 465 3 27, 26, 27 3, 3, 183 506 471 471 655 20 501 135 4 4 10 10 10 10 6 19 th 18 th

6 120 521 38 49, 7, 13 18, 9, 17 679 551 30 563 15 15 th 0 4 4

520 500 508 514 5 10 10 40, 19, 23 69, 24, 48 22nd 21st Street 20 th 29, 18, 42 8 474 38 4 4 4 4 43 440 13 8, 10, 26 24 460 30 42 429 18 11, 3 10 10 496 489 489

19 th 18 th FITZPATRICK 541 502 502 667 18, 64, 4 9, 4, 27 14 430 58 4 494 10 93, 69, 69 2, 14, 185 505 508 508 706 28 491 148 4 4 10 10 10 10

15 th 0 4 4 118 562 50 547 110, 10, 34 31, 23, 19 730 615 30 502 15

22nd 21st Street 20 th 678 686 5 5 13, 11, 30 26 597 55 9 9 9 9 34 725 12 55, 34, 15 14, 10, 40 5 5 771 795 33 659 26 30 717 48 7 71, 30, 60 10, 3 795 81

19 th 18 th FITZPATRICK 712 703 703 697 7, 69, 12 6, 4, 33 85 606 12 242 560 20 99, 82, 81 10, 10, 326 822 919 7 687 3 9 9 5 5 5 5

15 th 9 125 768 10 45, 28, 45 56, 17, 27 903 840 55 612 27

APPENDIX C Crash Diagrams

APPENDIX B

INTRODUCTION ROAD DIET CONVERSIONS Process

Operational evaluation Safety evaluation

Operational Performance Safety Performance

Other Considerations

Design Considerations

Performance Evaluation When Not to Convert

Analysis Checklist Operational aspects Safety aspects Multimodal operations Access management Livability Operational consistency Transition design Cross section elements

REFERNCES Guidelines for Road Diet Conversions, 2.

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