Appendix D Traffic Impact Analysis - westplainseis.com

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HCM Signalized Intersection Capacity Analysis 10: SR-902 & Craig 2/14/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (vph) 78 346 11 17 346 78 6 101 6 112 149 222 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1000 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.97 1.00 0.99 1.00 0.91 Flt Protected 0.95 1.00 0.95 1.00 0.95 1.00 0.95 1.00 Satd. Flow (prot) 1787 1873 1805 1847 1770 972 1787 1712 Flt Permitted 0.24 1.00 0.41 1.00 0.36 1.00 0.59 1.00 Satd. Flow (perm) 447 1873 770 1847 663 972 1102 1712 Peak-hour factor, PHF 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Adj. Flow (vph) 87 384 12 19 384 87 7 112 7 124 166 247 RTOR Reduction (vph) 0 2 0 0 13 0 0 4 0 0 90 0 Lane Group Flow (vph) 87 394 0 19 458 0 7 115 0 124 323 0 Heavy Vehicles (%) 1% 1% 1% 0% 0% 0% 2% 2% 2% 1% 1% 1% Turn Type pm+pt pm+pt pm+pt pm+pt Protected Phases 7 4 3 8 5 2 1 6 Permitted Phases 4 8 2 6 Actuated Green, G (s) 21.0 19.0 18.2 17.6 14.8 14.2 19.4 16.5 Effective Green, g (s) 21.0 19.0 18.2 17.6 14.8 14.2 19.4 16.5 Actuated g/C Ratio 0.40 0.36 0.35 0.33 0.28 0.27 0.37 0.31 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 229 675 278 617 199 262 443 536 v/s Ratio Prot c0.01 0.21 0.00 c0.25 0.00 0.12 c0.02 c0.19 v/s Ratio Perm 0.14 0.02 0.01 0.09 v/c Ratio 0.38 0.58 0.07 0.74 0.04 0.44 0.28 0.60 Uniform Delay, d1 11.0 13.6 11.6 15.5 13.9 16.0 11.4 15.3 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 1.1 1.3 0.1 4.8 0.1 1.2 0.3 1.9 Delay (s) 12.1 14.9 11.7 20.4 13.9 17.1 11.7 17.2 Level of Service B B B C B B B B Approach Delay (s) 14.4 20.0 17.0 16.0 Approach LOS B C B B Intersection Summary HCM Average Control Delay 16.8 HCM Level of Service B HCM Volume to Capacity ratio 0.67 Actuated Cycle Length (s) 52.7 Sum of lost time (s) 16.0 Intersection Capacity Utilization 58.7% ICU Level of Service B Analysis Period (min) 15 Description: Signalized, Optimized SB right turn bay c Critical Lane Group West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 3 Buildout-Mitigated Page 5
HCM Signalized Intersection Capacity Analysis 11: Hwy. 2 & Fairchild AFB 2/14/2011 Movement EBT EBR WBL WBT NBL NBR Lane Configurations Volume (vph) 703 60 576 775 439 1193 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 6.0 6.0 6.0 6.0 4.0 4.0 Lane Util. Factor 0.95 1.00 0.97 0.95 0.97 1.00 Frt 1.00 0.85 1.00 1.00 1.00 0.85 Flt Protected 1.00 1.00 0.95 1.00 0.95 1.00 Satd. Flow (prot) 3471 1553 3467 3574 3502 1615 Flt Permitted 1.00 1.00 0.95 1.00 0.95 1.00 Satd. Flow (perm) 3471 1553 3467 3574 3502 1615 Peak-hour factor, PHF 0.72 0.72 0.72 0.72 0.72 0.72 Adj. Flow (vph) 976 83 800 1076 610 1657 RTOR Reduction (vph) 0 57 0 0 0 0 Lane Group Flow (vph) 976 26 800 1076 610 1657 Heavy Vehicles (%) 4% 4% 1% 1% 0% 0% Turn Type Perm Prot Free Protected Phases 6 5 2 4 Permitted Phases 6 Free Actuated Green, G (s) 24.1 24.1 19.1 49.2 18.9 78.1 Effective Green, g (s) 24.1 24.1 19.1 49.2 18.9 78.1 Actuated g/C Ratio 0.31 0.31 0.24 0.63 0.24 1.00 Clearance Time (s) 6.0 6.0 6.0 6.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 1071 479 848 2251 847 1615 v/s Ratio Prot 0.28 0.23 0.30 0.17 v/s Ratio Perm 0.02 c1.03 v/c Ratio 0.91 0.05 0.94 0.48 0.72 1.03 Uniform Delay, d1 26.0 19.0 29.0 7.7 27.2 39.0 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 11.5 0.0 18.5 0.2 3.0 29.3 Delay (s) 37.5 19.0 47.5 7.8 30.2 68.3 Level of Service D B D A C E Approach Delay (s) 36.0 24.7 58.1 Approach LOS D C E Intersection Summary HCM Average Control Delay 41.6 HCM Level of Service D HCM Volume to Capacity ratio 1.03 Actuated Cycle Length (s) 78.1 Sum of lost time (s) 0.0 Intersection Capacity Utilization 61.7% ICU Level of Service B Analysis Period (min) 15 Description: Add NB Lt turn bay and WB through lane c Critical Lane Group West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 3 Buildout-Mitigated Page 6
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APPENDIX D TRAFFIC IMPACT ANALYSIS
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TABLE OF CONTENTS 1. EXECUTIVE SUMM
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Table 7. Alternative 1 - PM Peak Ho
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• 10,480-square-foot Tribal Cultu
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Hwy. 2 / Hayford Rd. S 2012 - Phase
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Hwy 2 / Lundstrom: Restripe and wid
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2032 Alternative 2 Mitigations (in
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Table ES- 2. Operational Analysis S
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Table ES- 4. Operational Analysis S
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INTERSECTION MITIGATION - ALTERNATI
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MITIGATION-ALT 2, CONTINUED 2012 PM
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MITIGATION-ALT 3, CONTINUED INTERSE
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• 41,633-square-foot commercial d
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Project Site J 908 N. Howard St. St
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J Map from Friedmutter Group, Decem
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2.5 Methodology The weekday PM peak
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2.7 Applicable Standards, Policies
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3. EXISTING CONDITIONS 3.1 Street N
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3.5 Traffic Volumes The bulk of int
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Pipeline Project Description and As
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4.4 Operational Analysis and Level
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5. TRIP GENERATION and DISTRIBUTION
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5.3 Trip Generation - Alternative 2
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5.6 Trip Reductions and Net New Tri
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5.7 Trip Distribution (Proposed Pro
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6.1.2 ALTERNATIVE 1 - 2015 Phase 2
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6.1.4 ALTERNATIVE 1 - MITIGATION Th
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Listed below are improvements recom
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6.1.5 ALTERNATIVE 2 - 2012 Buildout
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MITIGATION-ALT 2, CONTINUED 2012 PM
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6.1.8 ALTERNATIVE 3 - MITIGATION Th
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The Spokane Tribe should work with
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Table 22. Level of Service for 2032
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Alternative 3 is projected to gener
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2032 Alternative 2 Mitigations:
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8. CONCLUSIONS Based upon the techn
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9. RECOMMENDATIONS Mitigation recom
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Hwy 2 / Hayford: Optimize signal ti
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Hwy 2 / Fairchild AFB: Modify signa
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APPENDIX A TRAFFIC COUNT DATA Appen
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PROJECT: West Plains Development DA
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1 PROJECT: DAVID EVANS and ASSOCIAT
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PROJECT: Project Location INTERSECT
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Pipeline (Year 2012) Int. # INTERSE
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APPENDIX C TRIP GENERATION/INTERNAL
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TRIP GENERATION LAND USE: SHOPPING
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TRIP GENERATION LAND USE: Quality S
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TRIP GENERATION LAND USE: POLICE ST
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ITE Multi-Use Project Internal Capt
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APPENDIX E SYNCHRO WORKSHEETS Appen
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HCM Unsignalized Intersection Capac
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HCM Signalized Intersection Capacit
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APPENDIX E4 YEAR 2019 EXISTING PLUS
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APPENDIX E6 ALTERNATIVE 1 YEAR 2015
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YEAR 2032 SYNCHRO WORKSHEETS Append
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Page 371 and 372: HCM Unsignalized Intersection Capac
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Page 425: APPENDIX F SIDRA ANALYSIS WORKSHEET
Page 428 and 429: MOVEMENT SUMMARY Craig Rd./Hwy. (YE
Page 430 and 431: INTERSECTION SUMMARY Craig Rd./Hwy.
Page 432 and 433: QUEUE DISTANCE Largest 95% Back of
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Page 447 and 448: MOVEMENT SUMMARY Middle Dwy./Hwy. (
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MOVEMENT SUMMARY Craig Rd./Hwy. 902
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YEAR 2032 SIDRA ANALYSIS WORKSHEETS
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MOVEMENT SUMMARY Craig Rd./Hwy. (YE
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INTERSECTION SUMMARY Craig Rd./Hwy.
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QUEUE DISTANCE Largest 95% Back of
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MOVEMENT SUMMARY Craig Rd./Hwy. (YE
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MOVEMENT SUMMARY Middle Dwy./Hwy. (
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INTERSECTION SUMMARY Middle Dwy./Hw
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INTERSECTION SUMMARY Middle Dwy./Hw
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MOVEMENT SUMMARY Craig Rd./6th Ave.
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MOVEMENT SUMMARY Craig Rd./Dwy. Nor
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8 Hour-100%-Minimum Volume - Craig-
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8 Hour-100%-Minimum Volume - Craig-
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8 Hour-100%-Minimum Volume - Middle
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8 Hour-100%-Minimum Volume - Middle
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8 Hour-100%-Minimum Volume - SR-902
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8 Hour-100%-Minimum Volume - SR-902
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ADDENDUM TO TRAFFIC IMPACT ANALYSIS
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overall site plan would not be sign
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In lieu of the various mitigations
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Project Proportional Share: 29.8% F
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Hwy 2 / Fairchild AFB: Modify signa
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Attachment B: Two Roundabout Access
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Attachment C: Operational Analysis
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LEVEL OF SERVICE SUMMARY West Dwy./
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MOVEMENT SUMMARY West Dwy./Hwy. (YE
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MOVEMENT SUMMARY West Dwy./Hwy. (YE
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MOVEMENT SUMMARY West RB 2032 Alt.1
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LEVEL OF SERVICE SUMMARY West RB 20
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MOVEMENT SUMMARY West RB 2032 Alt.3
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LEVEL OF SERVICE SUMMARY Middle Dwy
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LEVEL OF SERVICE SUMMARY Craig Rd./
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Appendix D Traffic Impact Analysis - westplainseis.com

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