Appendix D Traffic Impact Analysis - westplainseis.com

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HCM Unsignalized Intersection Capacity Analysis 2: Hwy. 2 & Lundstrom St. 2/8/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (veh/h) 27 1937 30 19 1727 31 15 3 21 12 4 17 Sign Control Free Free Stop Stop Grade 0% 0% 0% 0% Peak Hour Factor 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 Hourly flow rate (vph) 28 1997 31 20 1780 32 15 3 22 12 4 18 Pedestrians Lane Width (ft) Walking Speed (ft/s) Percent Blockage Right turn flare (veh) Median type TWLTL None Median storage veh) 2 Upstream signal (ft) pX, platoon unblocked vC, conflicting volume 1812 2028 3017 3920 1014 2913 3919 906 vC1, stage 1 conf vol 2068 2068 1836 1836 vC2, stage 2 conf vol 949 1852 1077 2084 vCu, unblocked vol 1812 2028 3017 3920 1014 2913 3919 906 tC, single (s) 4.1 4.1 7.5 6.5 6.9 7.5 6.5 6.9 tC, 2 stage (s) 6.5 5.5 6.5 5.5 tF (s) 2.2 2.2 3.5 4.0 3.3 3.5 4.0 3.3 p0 queue free % 92 93 69 95 91 81 93 94 cM capacity (veh/h) 335 280 49 59 240 65 56 283 Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1 Volume Total 28 1331 697 20 1187 625 40 34 Volume Left 28 0 0 20 0 0 15 12 Volume Right 0 0 31 0 0 32 22 18 cSH 335 1700 1700 280 1700 1700 88 105 Volume to Capacity 0.08 0.78 0.41 0.07 0.70 0.37 0.46 0.32 Queue Length 95th (ft) 7 0 0 6 0 0 48 32 Control Delay (s) 16.7 0.0 0.0 18.8 0.0 0.0 76.6 55.1 Lane LOS C C F F Approach Delay (s) 0.2 0.2 76.6 55.1 Approach LOS F F Intersection Summary Average Delay 1.5 Intersection Capacity Utilization 64.5% ICU Level of Service C Analysis Period (min) 15 2015 plus Project, Alt. 1, PH2 Synchro 7 - Report cak Page 2
HCM Signalized Intersection Capacity Analysis 3: Hwy. 2 & Lawson St 2/8/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (vph) 61 1897 40 93 1494 30 86 34 94 65 35 42 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 5.0 5.0 5.0 5.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 0.95 1.00 0.95 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 0.97 1.00 0.97 1.00 Satd. Flow (prot) 1787 3563 1787 3564 1816 1599 1822 1599 Flt Permitted 0.95 1.00 0.95 1.00 0.62 1.00 0.57 1.00 Satd. Flow (perm) 1787 3563 1787 3564 1157 1599 1067 1599 Peak-hour factor, PHF 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 Adj. Flow (vph) 66 2040 43 100 1606 32 92 37 101 70 38 45 RTOR Reduction (vph) 0 1 0 0 1 0 0 0 47 0 0 25 Lane Group Flow (vph) 66 2082 0 100 1637 0 0 129 54 0 108 20 Heavy Vehicles (%) 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% Turn Type Prot Prot Perm Perm Perm Perm Protected Phases 1 6 5 2 4 8 Permitted Phases 4 4 8 8 Actuated Green, G (s) 6.3 80.3 9.1 83.1 17.7 17.7 17.7 17.7 Effective Green, g (s) 6.3 80.3 9.1 83.1 17.7 17.7 17.7 17.7 Actuated g/C Ratio 0.05 0.66 0.08 0.69 0.15 0.15 0.15 0.15 Clearance Time (s) 5.0 5.0 5.0 5.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.8 3.0 2.5 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 93 2363 134 2446 169 234 156 234 v/s Ratio Prot 0.04 c0.58 0.06 c0.46 v/s Ratio Perm c0.11 0.03 0.10 0.01 v/c Ratio 0.71 0.88 0.75 0.67 0.76 0.23 0.69 0.09 Uniform Delay, d1 56.5 16.5 54.9 11.0 49.7 45.7 49.1 44.7 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 21.9 4.3 20.0 0.6 18.3 0.5 12.5 0.2 Delay (s) 78.4 20.9 74.9 11.7 68.0 46.2 61.6 44.9 Level of Service E C E B E D E D Approach Delay (s) 22.6 15.3 58.4 56.7 Approach LOS C B E E Intersection Summary HCM Average Control Delay 22.8 HCM Level of Service C HCM Volume to Capacity ratio 0.82 Actuated Cycle Length (s) 121.1 Sum of lost time (s) 9.0 Intersection Capacity Utilization 83.7% ICU Level of Service E Analysis Period (min) 15 Description: Optimized c Critical Lane Group 2015 plus Project, Alt. 1, PH2 Synchro 7 - Report cak Page 3
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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 190 and 191: HCM Unsignalized Intersection Capac
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Page 198 and 199: APPENDIX E4 YEAR 2019 EXISTING PLUS
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Page 262 and 263: APPENDIX E7 ALTERNATIVE 1 YEAR 2019
Page 286: HCM Signalized Intersection Capacit
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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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