Appendix D Traffic Impact Analysis - westplainseis.com

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HCM Signalized Intersection Capacity Analysis 11: Hwy. 2 & Fairchild AFB 2/10/2011 Movement EBT EBR WBL WBT NBL NBR Lane Configurations Volume (vph) 778 60 621 843 439 1243 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) 1081 83 862 1171 610 1726 RTOR Reduction (vph) 0 47 0 0 0 0 Lane Group Flow (vph) 1081 36 862 1171 610 1726 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) 31.9 31.9 24.9 62.8 21.4 94.2 Effective Green, g (s) 31.9 31.9 24.9 62.8 21.4 94.2 Actuated g/C Ratio 0.34 0.34 0.26 0.67 0.23 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) 1175 526 916 2383 796 1615 v/s Ratio Prot 0.31 0.25 0.33 0.17 v/s Ratio Perm 0.02 c1.07 v/c Ratio 0.92 0.07 0.94 0.49 0.77 1.07 Uniform Delay, d1 29.9 21.1 33.9 7.8 34.1 47.1 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 11.6 0.1 17.2 0.2 4.4 43.3 Delay (s) 41.5 21.1 51.1 7.9 38.5 90.4 Level of Service D C D A D F Approach Delay (s) 40.1 26.3 76.9 Approach LOS D C E Intersection Summary HCM Average Control Delay 50.5 HCM Level of Service D HCM Volume to Capacity ratio 1.07 Actuated Cycle Length (s) 94.2 Sum of lost time (s) 0.0 Intersection Capacity Utilization 65.1% ICU Level of Service C Analysis Period (min) 15 Description: Optimized Add NB Left turn bay and WB through lane c Critical Lane Group West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 1 Buildout-Mitigated Page 7
HCM Unsignalized Intersection Capacity Analysis 12: 6th Ave & Craig Road 2/10/2011 Movement WBL WBR NBT NBR SBL SBT Lane Configurations Volume (veh/h) 328 0 616 400 0 494 Sign Control Stop Free Free Grade 0% 0% 0% Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 Hourly flow rate (vph) 357 0 670 435 0 537 Pedestrians Lane Width (ft) Walking Speed (ft/s) Percent Blockage Right turn flare (veh) 4 Median type TWLTL None Median storage veh) 2 Upstream signal (ft) pX, platoon unblocked vC, conflicting volume 1207 670 1104 vC1, stage 1 conf vol 670 vC2, stage 2 conf vol 537 vCu, unblocked vol 1207 670 1104 tC, single (s) 6.4 6.2 4.1 tC, 2 stage (s) 5.4 tF (s) 3.5 3.3 2.2 p0 queue free % 15 100 100 cM capacity (veh/h) 418 457 632 Direction, Lane # WB 1 NB 1 NB 2 SB 1 SB 2 Volume Total 357 670 435 0 537 Volume Left 357 0 0 0 0 Volume Right 0 0 435 0 0 cSH 417 1700 1700 1700 1700 Volume to Capacity 0.86 0.39 0.26 0.00 0.32 Queue Length 95th (ft) 210 0 0 0 0 Control Delay (s) 47.3 0.0 0.0 0.0 0.0 Lane LOS E Approach Delay (s) 47.3 0.0 0.0 Approach LOS E Intersection Summary Average Delay 8.4 Intersection Capacity Utilization 57.3% ICU Level of Service B Analysis Period (min) 15 Description: NB Right Turn Bay-Check roundabout West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 1 Buildout-Mitigated Page 8
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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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Page 319 and 320: HCM Unsignalized Intersection Capac
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Page 333 and 334: 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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