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4010 RANDOLPH ROAD Traffic Impact Study

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4010 RANDOLPH ROAD Traffic Impact Study 4010 RANDOLPH ROAD Traffic Impact Study PREPARED FOR AHC INC. DECEMBER 2020 REVISED MARCH 2021 Prepared By: 4010 RANDOLPH ROAD Traffic Impact Study Prepared for: AHC, INC. DECEMEBER 2020 Prepared By: Prepared under the Supervision of: Andrew Smith, PE, Kimley-Horn and Associates, Inc. Email: [email protected] 11400 Commerce Park Drive, Suite 400 Reston, VA 20191 Phone: (703) 674-1300 Fax: (703) 674-1361 © Kimley-Horn & Associates, Inc. 2020 This document, together with the concepts and designs presented herein, as an instrument of service, is intended only for the specific purpose and client for which it was prepared. Reuse of and improper reliance on this document without written authorization and adaptation by Kimley-Horn and Associates, Inc. shall be without liability to Kimley- Horn and Associates, Inc LIST OF FIGURES...............................................................................................................iii LIST OF TABLES ................................................................................................................iv Executive Summary ........................................................................................................... v Introduction ........................................................................................................................ 1 Background Information .................................................................................................... 2 Description of Proposed Development ............................................................................................ 2 Study Area ....................................................................................................................................... 2 Existing Area Roadways .................................................................................................................. 6 Existing Area Transit Service .......................................................................................................... 6 Bus Routes ..................................................................................................................................... 6 Existing Pedestrian and Bicycle Facilities ....................................................................................... 7 Signalized Pedestrian Crossing Distance Analysis ....................................................................... 10 Future Transportation Modifications .............................................................................................. 10 Existing Traffic Conditions ...............................................................................................11 Existing Traffic Volumes ................................................................................................................ 11 Background Traffic Conditions ........................................................................................15 Approved and Unbuilt (Pipeline) Developments ............................................................................ 15 Background Traffic Volumes ......................................................................................................... 15 Total Future Traffic Conditions ........................................................................................19 Site Trip Generation ...................................................................................................................... 19 Site Traffic Distribution and Assignment ....................................................................................... 20 Total Future Traffic Volumes ......................................................................................................... 22 Assessment of Transportation System Adequacy .........................................................28 Motor Vehicle System Adequacy ................................................................................................... 28 i HCM (Synchro) Analysis .............................................................................................................. 28 Pedestrian, Bicycle, and Transit System Adequacy ...................................................................... 29 Pedestrian and Bicycle Impact Statement .......................................................................30 Traffic Signal Warrant Analysis ........................................................................................32 Warrant Descriptions .................................................................................................................... 32 Signal Warrant Volumes ............................................................................................................... 36 Applicable Warrant Evaluations .................................................................................................... 44 Warrant Results Summary ........................................................................................................... 48 Conclusions.......................................................................................................................49 ii LIST OF FIGURES Figure 1: Site Vicinity Map ...................................................................................................................... 3 Figure 2: Conceptual Site Plan ............................................................................................................... 4 Figure 3: Existing Lane Designations ..................................................................................................... 5 Figure 4: Existing Transit Map ................................................................................................................ 8 Figure 5: Existing Pedestrian Network Map ........................................................................................... 9 Figure 6: Adjusted Existing Peak Hour Traffic Volumes....................................................................... 12 Figure 7: Existing Peak Hour Pedestrian Volumes .............................................................................. 13 Figure 8: Existing Peak Hour Bicycle Volumes .................................................................................... 14 Figure 9: Locations of Approved and Unbuilt Development ................................................................. 16 Figure 10: Pipeline Development Peak Hour Traffic Volumes ............................................................. 17 Figure 11: Background Peak Hour Traffic Volumes ............................................................................. 18 Figure 12: Directional Distribution of Site Generated Trips .................................................................. 21 Figure 13: Site Trip Assignment Percentages ...................................................................................... 23 Figure 14: Site Generated Peak Hour Traffic Volumes ........................................................................ 24 Figure 15: Existing Trip Credit .............................................................................................................. 25 Figure 16: Net Site Generated Peak Hour Traffic Volumes ................................................................. 26 Figure 17: Total Future Peak Hour Traffic Volumes ............................................................................. 27 Figure 18: Adjusted Existing Hourly Traffic Volumes ........................................................................... 37 Figure 19: Existing Percentage of Daily Traffic .................................................................................... 38 Figure 20: Pipeline Development Hourly Traffic Volumes .................................................................... 39 Figure 21: Background Hourly Traffic Volumes .................................................................................... 40 Figure 22: Net Site Generated Hourly Traffic Volumes ........................................................................ 41 Figure 23: Total Future Hourly Traffic Volumes ................................................................................... 42 Figure 24: Total Future Hourly Traffic Volumes with Right-Turn Adjustment ....................................... 43 iii Figure 25: Eight-Hour Vehicle Volume Warrant Thresholds ................................................................ 45 Figure 26: Four-Hour Vehicle Volume Warrant Thresholds ................................................................. 46 Figure 27: Peak-Hour Vehicle Volume Warrant Thresholds ................................................................ 47 LIST OF TABLES Table 1: Pedestrian Crossing Distance Analysis Results .................................................................... 10 Table 2: Trip Generation for Approved and Unbuilt Developments ..................................................... 15 Table 3: Site Generated Peak Hour Vehicle Trip Generation .............................................................. 19 Table 4: Multimodal Peak Hour Vehicle Trip Generation ..................................................................... 20 Table 5: Directional Distribution of Approach for Site Generated Trips ............................................... 20 Table 6: HCM Capacity Analysis Results (delay in seconds) .............................................................. 28 Table 7: Signal Warrant Results ..........................................................................................................
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