Appendix D Traffic Impact Analysis - westplainseis.com

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HCM Unsignalized Intersection Capacity Analysis 10: SR-902 & Craig 2/8/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (veh/h) 78 284 9 14 284 113 5 126 5 137 161 196 Sign Control Free Free Stop Stop Grade 0% 0% 0% 0% Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Hourly flow rate (vph) 87 316 10 16 316 126 6 140 6 152 179 218 Pedestrians Lane Width (ft) Walking Speed (ft/s) Percent Blockage Right turn flare (veh) Median type None None Median storage veh) Upstream signal (ft) pX, platoon unblocked vC, conflicting volume 441 326 1148 966 321 974 908 378 vC1, stage 1 conf vol vC2, stage 2 conf vol vCu, unblocked vol 441 326 1148 966 321 974 908 378 tC, single (s) 4.1 4.1 7.1 6.5 6.2 7.1 6.5 6.2 tC, 2 stage (s) tF (s) 2.2 2.2 3.5 4.0 3.3 3.5 4.0 3.3 p0 queue free % 92 99 88 40 99 0 29 68 cM capacity (veh/h) 1124 1245 47 232 720 112 252 671 Direction, Lane # EB 1 EB 2 WB 1 WB 2 NB 1 SB 1 Volume Total 87 326 16 441 151 549 Volume Left 87 0 16 0 6 152 Volume Right 0 10 0 126 6 218 cSH 1124 1700 1245 1700 207 230 Volume to Capacity 0.08 0.19 0.01 0.26 0.73 2.39 Queue Length 95th (ft) 6 0 1 0 120 1113 Control Delay (s) 8.5 0.0 7.9 0.0 58.4 671.9 Lane LOS A A F F Approach Delay (s) 1.8 0.3 58.4 671.9 Approach LOS F F Intersection Summary Average Delay 241.2 Intersection Capacity Utilization 81.2% ICU Level of Service D Analysis Period (min) 15 2015 plus Project, Alt. 1, PH2 Synchro 7 - Report cak Page 10
HCM Signalized Intersection Capacity Analysis 11: Hwy. 2 & Fairchild AFB 2/8/2011 Movement EBT EBR WBL WBT NBL NBR Lane Configurations Volume (vph) 552 49 403 632 361 871 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 1.00 1.00 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 1881 1805 1615 Flt Permitted 1.00 1.00 0.95 1.00 0.95 1.00 Satd. Flow (perm) 3471 1553 3467 1881 1805 1615 Peak-hour factor, PHF 0.72 0.72 0.72 0.72 0.72 0.72 Adj. Flow (vph) 767 68 560 878 501 1210 RTOR Reduction (vph) 0 50 0 0 0 0 Lane Group Flow (vph) 767 18 560 878 501 1210 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) 20.3 20.3 14.6 40.9 24.4 75.3 Effective Green, g (s) 20.3 20.3 14.6 40.9 24.4 75.3 Actuated g/C Ratio 0.27 0.27 0.19 0.54 0.32 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) 936 419 672 1022 585 1615 v/s Ratio Prot 0.22 0.16 c0.47 0.28 v/s Ratio Perm 0.01 c0.75 v/c Ratio 0.82 0.04 0.83 0.86 0.86 0.75 Uniform Delay, d1 25.8 20.3 29.2 14.7 23.8 0.0 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 5.7 0.0 8.7 7.3 11.8 3.2 Delay (s) 31.5 20.4 37.9 22.0 35.6 3.2 Level of Service C C D C D A Approach Delay (s) 30.6 28.2 12.7 Approach LOS C C B Intersection Summary HCM Average Control Delay 22.1 HCM Level of Service C HCM Volume to Capacity ratio 0.82 Actuated Cycle Length (s) 75.3 Sum of lost time (s) 6.0 Intersection Capacity Utilization 61.6% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 plus Project, Alt. 1, PH2 Synchro 7 - Report cak Page 11
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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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Page 198 and 199: APPENDIX E4 YEAR 2019 EXISTING PLUS
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APPENDIX E9 ALTERNATIVE 3 YEAR 2012
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YEAR 2032 SYNCHRO WORKSHEETS Append
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APPENDIX F SIDRA ANALYSIS WORKSHEET
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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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INTERSECTION SUMMARY Middle Dwy./Hw
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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./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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