Appendix D Traffic Impact Analysis - westplainseis.com

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HCM Signalized Intersection Capacity Analysis 5: Hwy. 2 & Hayford Rd. 2/10/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (vph) 604 2079 176 179 2323 264 138 248 213 438 168 427 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 Lane Util. Factor 0.97 0.95 1.00 0.97 0.91 1.00 0.97 0.95 1.00 0.97 1.00 1.00 Frt 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 3467 3574 1599 3467 5136 1599 3502 3610 1615 3467 1881 1599 Flt Permitted 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (perm) 3467 3574 1599 3467 5136 1599 3502 3610 1615 3467 1881 1599 Peak-hour factor, PHF 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 0.94 Adj. Flow (vph) 643 2212 187 190 2471 281 147 264 227 466 179 454 RTOR Reduction (vph) 0 0 30 0 0 79 0 0 1 0 0 9 Lane Group Flow (vph) 643 2212 157 190 2471 202 147 264 226 466 179 445 Heavy Vehicles (%) 1% 1% 1% 1% 1% 1% 0% 0% 0% 1% 1% 1% Turn Type Prot pm+ov Prot pm+ov Prot pm+ov Prot pm+ov Protected Phases 5 2 3 1 6 7 3 8 1 7 4 5 Permitted Phases 2 6 8 4 Actuated Green, G (s) 17.6 65.1 74.5 6.5 54.0 66.5 9.4 14.7 21.2 12.5 17.8 35.4 Effective Green, g (s) 17.6 65.1 74.5 6.5 54.0 66.5 9.4 14.7 21.2 12.5 17.8 35.4 Actuated g/C Ratio 0.15 0.54 0.62 0.05 0.45 0.55 0.08 0.12 0.18 0.10 0.15 0.29 Clearance Time (s) 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 Vehicle Extension (s) 3.0 2.5 3.0 3.0 2.1 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 505 1926 1059 187 2296 880 273 439 357 359 277 469 v/s Ratio Prot 0.19 c0.62 0.01 0.05 c0.48 0.02 0.04 0.07 0.03 c0.13 0.10 c0.14 v/s Ratio Perm 0.09 0.10 0.11 0.14 v/c Ratio 1.27 1.15 0.15 1.02 1.08 0.23 0.54 0.60 0.63 1.30 0.65 0.95 Uniform Delay, d1 51.6 27.9 9.8 57.1 33.4 14.0 53.6 50.3 46.2 54.1 48.5 41.8 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 137.8 73.4 0.1 70.0 43.1 0.1 2.0 2.3 3.7 153.2 5.1 28.6 Delay (s) 189.4 101.3 9.8 127.2 76.5 14.1 55.7 52.6 49.8 207.4 53.6 70.4 Level of Service F F A F E B E D D F D E Approach Delay (s) 114.3 73.8 52.3 125.8 Approach LOS F E D F Intersection Summary HCM Average Control Delay 95.4 HCM Level of Service F HCM Volume to Capacity ratio 1.19 Actuated Cycle Length (s) 120.8 Sum of lost time (s) 22.0 Intersection Capacity Utilization 100.3% ICU Level of Service G Analysis Period (min) 15 Description: Dual lefts all approaches, Reconfigure SB Through/Right Add WB auxilliary lane Add EB and NB right turn bays Optimized c Critical Lane Group West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 1 Buildout-Mitigated Page 5
HCM Signalized Intersection Capacity Analysis 10: SR-902 & Craig 2/10/2011 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Volume (vph) 95 346 11 17 346 136 6 151 6 165 194 237 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 0.96 1.00 0.99 1.00 0.92 Flt Protected 0.95 1.00 0.95 1.00 0.95 1.00 0.95 1.00 Satd. Flow (prot) 1787 1873 1805 1820 1770 975 1787 1726 Flt Permitted 0.17 1.00 0.42 1.00 0.25 1.00 0.55 1.00 Satd. Flow (perm) 329 1873 804 1820 460 975 1040 1726 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) 106 384 12 19 384 151 7 168 7 183 216 263 RTOR Reduction (vph) 0 2 0 0 21 0 0 2 0 0 65 0 Lane Group Flow (vph) 106 394 0 19 514 0 7 173 0 183 414 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) 26.8 23.9 22.4 21.7 18.4 17.7 22.8 19.9 Effective Green, g (s) 26.8 23.9 22.4 21.7 18.4 17.7 22.8 19.9 Actuated g/C Ratio 0.44 0.39 0.37 0.35 0.30 0.29 0.37 0.33 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) 213 731 306 645 153 282 423 561 v/s Ratio Prot c0.02 0.21 0.00 c0.28 0.00 0.18 c0.02 c0.24 v/s Ratio Perm 0.19 0.02 0.01 0.14 v/c Ratio 0.50 0.54 0.06 0.80 0.05 0.61 0.43 0.74 Uniform Delay, d1 12.3 14.4 12.6 17.8 15.7 18.8 14.3 18.3 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 1.8 0.8 0.1 6.8 0.1 3.9 0.7 5.0 Delay (s) 14.2 15.2 12.7 24.6 15.8 22.7 15.0 23.4 Level of Service B B B C B C B C Approach Delay (s) 15.0 24.2 22.4 21.0 Approach LOS B C C C Intersection Summary HCM Average Control Delay 20.5 HCM Level of Service C HCM Volume to Capacity ratio 0.84 Actuated Cycle Length (s) 61.2 Sum of lost time (s) 20.0 Intersection Capacity Utilization 73.1% ICU Level of Service D Analysis Period (min) 15 Description: Signalized, Optimized c Critical Lane Group West Plains Development Traffic Impact Analysis Synchro 7 - Report 2032-Alternative 1 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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Page 317 and 318: 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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