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Home My WebLink About180224 Scotts Hill Apts Technical Memorandum 08.16.2018This report is printed on recycled paper with 30% post-consumer content. All paper is FSC Certified. The entire document, including binding, is 100% recyclable. TECHNICAL MEMORANDUM August 16 2018 Scott's Hill Apartments New Hanover County, NC Prepared for Evolve Acquisition, LLC Project #: 180224 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 1 TECHNICAL MEMORANDUM To: Fredric Royal From: Daniel R. Cumbo, PE Date: August 16th, 2018 RE: Scott’s Hill Apartments, New Hanover County, NC Introduction The purpose of this report is to summarize the results of US 17 at the U-turn south of Creekwood Road. Incidentally, this U-turn movement for the signal was kept as permitted/protected in future scenarios when it should have been changed to protected only for the U-turn movement. As part of WMPO’s review process, it is requested to provide the results with this movement changed to protected only. LOS Results Below in Table 1 is the updated LOS table for the intersection with the necessary edits made. The AM/PM existing scenarios have remained the same, and all future scenarios have been updated. Table 1 - US 17 at U-turn south of Creekwood Road Scenario Overall LOS Level of Service by Approach (Delay in sec/veh) Northbound Southbound AM Peak Hour 2018 Existing A (2.8) L T R U T R A (2.9) A (0.0) A (0.0) A (2.9) N/A* 2020 Future No Build A (3.8) L T R U T R A (3.2) C (24.1) A (0.0) A (3.2) N/A* 2020 Future Build A (3.9) L T R U T R A (3.3) C (24.2) A (0.0) A (3.3) N/A* PM Peak Hour 2018 Existing A (4.8) L T R U T R A (4.9) A (0.0) A (0.0) A (4.9) N/A* 2020 Future No Build A (6.2) L T R U T R A (6.0) C (34.1) A (0.0) A (6.0) N/A* 2020 Future Build A (7.1) L T R U T R A (6.7) C (34.5) A (0.0) A (6.7) N/A* *Due to Synchro modeling practices for superstreets, which requires 2 separate nodes, the approach LOS can not be provided 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 2 Queue Results Below in Table 2 are the updated queue results for the intersection with the necessary edits made. The AM/PM existing scenarios have remained the same, and all future scenarios have been updated. Table 2 - Queue Results AM Peak Hour Queues Scenario US 17 at U-turn south of Creekwood Road 2018 Existing SBU SimTraffic Max Queue (ft) 29 Synchro 95th Percentile Queue (ft) 0 Storage Bay (ft) 375 2020 Future No Build SBU SimTraffic Max Queue (ft) 49 Synchro 95th Percentile Queue (ft) 36 Storage Bay (ft) 375 2020 Full Build SBU SimTraffic Max Queue (ft) 50 Synchro 95th Percentile Queue (ft) 37 Storage Bay (ft) 375 PM Peak Hour Queues Scenario US 17 at U-turn south of Creekwood Drive 2018 Existing SBU SimTraffic Max Queue (ft) 46 Synchro 95th Percentile Queue (ft) 0 Storage Bay (ft) 375 2020 Future No Build SBU SimTraffic Max Queue (ft) 70 Synchro 95th Percentile Queue (ft) 31 Storage Bay (ft) 375 2020 Full Build SBU SimTraffic Max Queue (ft) 68 Synchro 95th Percentile Queue (ft) 38 Storage Bay (ft) 375 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 3 Conclusion Based on the updated results, the original conclusion to not provide any recommendations at this intersection remains. The LOS does not have a significant change from future no build to future build scenarios, nor do the queue results show any queueing issues. 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 4 Appendix 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 5 Level of Service Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts AM FNB C. Steiss Page 1 Lane GroupEBLEBRNBLNBTSBTSBR Lane Configurations Traffic Volume (vph)3600128400 Future Volume (vph)3600128400 Ideal Flow (vphpl)190019001900190019001900 Lane Util. Factor1.001.001.000.951.001.00 Frt Flt Protected0.950 Satd. Flow (prot)177000353900 Flt Permitted0.950 Satd. Flow (perm)177000353900 Right Turn on RedNoNoNo Satd. Flow (RTOR) Link Speed (mph)305555 Link Distance (ft)911084506 Travel Time (s)2.113.46.3 Peak Hour Factor0.900.900.900.900.900.90 Adj. Flow (vph)4000142700 Shared Lane Traffic (%) Lane Group Flow (vph)4000142700 Turn TypeProtNA Protected Phases32 Permitted Phases Detector Phase32 Switch Phase Minimum Initial (s)7.014.0 Minimum Split (s)13.420.6 Total Split (s)21.039.0 Total Split (%)35.0%65.0% Maximum Green (s)14.632.4 Yellow Time (s)3.05.2 All-Red Time (s)3.41.4 Lost Time Adjust (s)-1.4-1.6 Total Lost Time (s)5.05.0 Lead/Lag Lead-Lag Optimize? Vehicle Extension (s)2.06.0 Minimum Gap (s)3.03.4 Time Before Reduce (s)0.015.0 Time To Reduce (s)0.030.0 Recall ModeNoneC-Max Act Effct Green (s)8.652.5 Actuated g/C Ratio0.140.88 v/c Ratio0.160.46 Control Delay24.13.2 Queue Delay0.00.0 Total Delay24.13.2 LOSCA Approach Delay24.13.2 Approach LOSCA Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts AM FNB C. Steiss Page 2 Lane GroupEBLEBRNBLNBTSBTSBR Queue Length 50th (ft)130 Queue Length 95th (ft)36162 Internal Link Dist (ft)111004426 Turn Bay Length (ft) Base Capacity (vph)4723094 Starvation Cap Reductn00 Spillback Cap Reductn00 Storage Cap Reductn00 Reduced v/c Ratio0.080.46 Intersection Summary Area Type:Other Cycle Length: 60 Actuated Cycle Length: 60 Offset: 12 (20%), Referenced to phase 2:NBT, Start of Green Natural Cycle: 40 Control Type: Actuated-Coordinated Maximum v/c Ratio: 0.46 Intersection Signal Delay: 3.8Intersection LOS: A Intersection Capacity Utilization 104.9%ICU Level of Service G Analysis Period (min) 15 Splits and Phases: 400: US 17 & U-Turn south of Creekwood Road Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts AM Future Build C. Steiss Page 1 Lane GroupEBLEBRNBLNBTSBTSBR Lane Configurations Traffic Volume (vph)3800129600 Future Volume (vph)3800129600 Ideal Flow (vphpl)190019001900190019001900 Lane Util. Factor1.001.001.000.951.001.00 Frt Flt Protected0.950 Satd. Flow (prot)177000353900 Flt Permitted0.950 Satd. Flow (perm)177000353900 Right Turn on RedNoNoNo Satd. Flow (RTOR) Link Speed (mph)305555 Link Distance (ft)911084506 Travel Time (s)2.113.46.3 Peak Hour Factor0.900.900.900.900.900.90 Adj. Flow (vph)4200144000 Shared Lane Traffic (%) Lane Group Flow (vph)4200144000 Turn TypeProtNA Protected Phases32 Permitted Phases Detector Phase32 Switch Phase Minimum Initial (s)7.014.0 Minimum Split (s)13.420.6 Total Split (s)21.039.0 Total Split (%)35.0%65.0% Maximum Green (s)14.632.4 Yellow Time (s)3.05.2 All-Red Time (s)3.41.4 Lost Time Adjust (s)-1.4-1.6 Total Lost Time (s)5.05.0 Lead/Lag Lead-Lag Optimize? Vehicle Extension (s)2.06.0 Minimum Gap (s)3.03.4 Time Before Reduce (s)0.015.0 Time To Reduce (s)0.030.0 Recall ModeNoneC-Max Act Effct Green (s)8.652.4 Actuated g/C Ratio0.140.87 v/c Ratio0.170.47 Control Delay24.23.3 Queue Delay0.00.0 Total Delay24.23.3 LOSCA Approach Delay24.23.3 Approach LOSCA Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts AM Future Build C. Steiss Page 2 Lane GroupEBLEBRNBLNBTSBTSBR Queue Length 50th (ft)140 Queue Length 95th (ft)37166 Internal Link Dist (ft)111004426 Turn Bay Length (ft) Base Capacity (vph)4723093 Starvation Cap Reductn00 Spillback Cap Reductn00 Storage Cap Reductn00 Reduced v/c Ratio0.090.47 Intersection Summary Area Type:Other Cycle Length: 60 Actuated Cycle Length: 60 Offset: 12 (20%), Referenced to phase 2:NBT, Start of Green Natural Cycle: 40 Control Type: Actuated-Coordinated Maximum v/c Ratio: 0.47 Intersection Signal Delay: 3.9Intersection LOS: A Intersection Capacity Utilization 106.6%ICU Level of Service G Analysis Period (min) 15 Splits and Phases: 400: US 17 & U-Turn south of Creekwood Road Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts PM FNB C. Steiss Page 1 Lane GroupEBLEBRNBLNBTSBTSBR Lane Configurations Traffic Volume (vph)1900217200 Future Volume (vph)1900217200 Ideal Flow (vphpl)190019001900190019001900 Lane Util. Factor1.001.001.000.951.001.00 Frt Flt Protected0.950 Satd. Flow (prot)177000353900 Flt Permitted0.950 Satd. Flow (perm)177000353900 Right Turn on RedNoNoNo Satd. Flow (RTOR) Link Speed (mph)305555 Link Distance (ft)911084506 Travel Time (s)2.113.46.3 Peak Hour Factor0.900.900.900.900.900.90 Adj. Flow (vph)2100241300 Shared Lane Traffic (%) Lane Group Flow (vph)2100241300 Turn TypeProtNA Protected Phases32 Permitted Phases Detector Phase32 Switch Phase Minimum Initial (s)7.014.0 Minimum Split (s)13.420.6 Total Split (s)20.060.0 Total Split (%)25.0%75.0% Maximum Green (s)13.653.4 Yellow Time (s)3.05.2 All-Red Time (s)3.41.4 Lost Time Adjust (s)-1.4-1.6 Total Lost Time (s)5.05.0 Lead/Lag Lead-Lag Optimize? Vehicle Extension (s)2.06.0 Minimum Gap (s)3.03.4 Time Before Reduce (s)0.015.0 Time To Reduce (s)0.030.0 Recall ModeNoneC-Max Act Effct Green (s)8.472.6 Actuated g/C Ratio0.100.91 v/c Ratio0.110.75 Control Delay34.16.0 Queue Delay0.00.0 Total Delay34.16.0 LOSCA Approach Delay34.16.0 Approach LOSCA Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts PM FNB C. Steiss Page 2 Lane GroupEBLEBRNBLNBTSBTSBR Queue Length 50th (ft)100 Queue Length 95th (ft)31490 Internal Link Dist (ft)111004426 Turn Bay Length (ft) Base Capacity (vph)3313212 Starvation Cap Reductn00 Spillback Cap Reductn00 Storage Cap Reductn00 Reduced v/c Ratio0.060.75 Intersection Summary Area Type:Other Cycle Length: 80 Actuated Cycle Length: 80 Offset: 2 (3%), Referenced to phase 2:NBT, Start of Green Natural Cycle: 70 Control Type: Actuated-Coordinated Maximum v/c Ratio: 0.75 Intersection Signal Delay: 6.2Intersection LOS: A Intersection Capacity Utilization 116.3%ICU Level of Service H Analysis Period (min) 15 Splits and Phases: 400: US 17 & U-Turn south of Creekwood Road Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts PM Future Build C. Steiss Page 1 Lane GroupEBLEBRNBLNBTSBTSBR Lane Configurations Traffic Volume (vph)2700222000 Future Volume (vph)2700222000 Ideal Flow (vphpl)190019001900190019001900 Lane Util. Factor1.001.001.000.951.001.00 Frt Flt Protected0.950 Satd. Flow (prot)177000353900 Flt Permitted0.950 Satd. Flow (perm)177000353900 Right Turn on RedNoNoNo Satd. Flow (RTOR) Link Speed (mph)305555 Link Distance (ft)911084506 Travel Time (s)2.113.46.3 Peak Hour Factor0.900.900.900.900.900.90 Adj. Flow (vph)3000246700 Shared Lane Traffic (%) Lane Group Flow (vph)3000246700 Turn TypeProtNA Protected Phases32 Permitted Phases Detector Phase32 Switch Phase Minimum Initial (s)7.014.0 Minimum Split (s)13.420.6 Total Split (s)20.060.0 Total Split (%)25.0%75.0% Maximum Green (s)13.653.4 Yellow Time (s)3.05.2 All-Red Time (s)3.41.4 Lost Time Adjust (s)-1.4-1.6 Total Lost Time (s)5.05.0 Lead/Lag Lead-Lag Optimize? Vehicle Extension (s)2.06.0 Minimum Gap (s)3.03.4 Time Before Reduce (s)0.015.0 Time To Reduce (s)0.030.0 Recall ModeNoneC-Max Act Effct Green (s)8.672.5 Actuated g/C Ratio0.110.91 v/c Ratio0.160.77 Control Delay34.56.7 Queue Delay0.00.0 Total Delay34.56.7 LOSCA Approach Delay34.56.7 Approach LOSCA Lanes, Volumes, Timings 400: US 17 & U-Turn south of Creekwood Road 08/15/2018 180224 Scott's Hill Apts PM Future Build C. Steiss Page 2 Lane GroupEBLEBRNBLNBTSBTSBR Queue Length 50th (ft)140 Queue Length 95th (ft)38#595 Internal Link Dist (ft)111004426 Turn Bay Length (ft) Base Capacity (vph)3313205 Starvation Cap Reductn00 Spillback Cap Reductn00 Storage Cap Reductn00 Reduced v/c Ratio0.090.77 Intersection Summary Area Type:Other Cycle Length: 80 Actuated Cycle Length: 80 Offset: 2 (3%), Referenced to phase 2:NBT, Start of Green Natural Cycle: 75 Control Type: Actuated-Coordinated Maximum v/c Ratio: 0.77 Intersection Signal Delay: 7.1Intersection LOS: A Intersection Capacity Utilization 118.4%ICU Level of Service H Analysis Period (min) 15 # 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles. Splits and Phases: 400: US 17 & U-Turn south of Creekwood Road 05/16/2018 180224 Scott’s Hill Apartments – Technical Memorandum 6 Queueing and Blocking Reports Queuing and Blocking Report AM FNB 08/15/2018 180224 Scott's Hill Apts SimTraffic Report C. Steiss Page 1 Intersection: 400: US 17 & U-Turn south of Creekwood Road MovementEBNBNB Directions ServedLTT Maximum Queue (ft)4910996 Average Queue (ft)193021 95th Queue (ft)478368 Link Distance (ft)4010621062 Upstream Blk Time (%)2 Queuing Penalty (veh)1 Storage Bay Dist (ft) Storage Blk Time (%) Queuing Penalty (veh) Queuing and Blocking Report AM Future Build 08/15/2018 180224 Scott's Hill Apts SimTraffic Report C. Steiss Page 1 Intersection: 400: US 17 & U-Turn south of Creekwood Road MovementEBNBNB Directions ServedLTT Maximum Queue (ft)5094113 Average Queue (ft)223132 95th Queue (ft)527886 Link Distance (ft)4010621062 Upstream Blk Time (%)4 Queuing Penalty (veh)1 Storage Bay Dist (ft) Storage Blk Time (%) Queuing Penalty (veh) Queuing and Blocking Report PM FNB 08/15/2018 180224 Scott's Hill Apts SimTraffic Report C. Steiss Page 1 Intersection: 400: US 17 & U-Turn south of Creekwood Road MovementEBNBNB Directions ServedLTT Maximum Queue (ft)7013499 Average Queue (ft)172829 95th Queue (ft)479295 Link Distance (ft)4010621062 Upstream Blk Time (%)2 Queuing Penalty (veh)0 Storage Bay Dist (ft) Storage Blk Time (%) Queuing Penalty (veh) Queuing and Blocking Report PM Future Build 08/15/2018 180224 Scott's Hill Apts SimTraffic Report C. Steiss Page 1 Intersection: 400: US 17 & U-Turn south of Creekwood Road MovementEBNBNB Directions ServedLTT Maximum Queue (ft)68206220 Average Queue (ft)226461 95th Queue (ft)53178177 Link Distance (ft)4010621062 Upstream Blk Time (%)6 Queuing Penalty (veh)2 Storage Bay Dist (ft) Storage Blk Time (%) Queuing Penalty (veh)