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Home My WebLink AboutSP201800011 Study 2019-04-29 (2)EPRpc EPR, PAC. ❑ENGINEERING 1-1PLANNING 902 E JEFFERSON ST. UNIT 101 CHARLOTTES❑ILLE' ❑A 22902 MEMORANDUM TO: JUSTIN SHIMP, P.E. ORGANIZATION: SHIMP ENGINEERING PHONE NUMBER: RE: REGENTS SCHOOL SITE TRAFFIC ASSESSMENT SUPPLEMENT ❑ YEAR 20❑❑ TRAFFIC RESULTS FROM: WEI HE BILL WUENSCH, P.E. DATE: APRIL 29, 2019 SENDER'S REFERENCE NUMBER: YOUR REFERENCE NUMBER: ❑ URGENT X FOR YOUR USE ❑ PLEASE COMMENT ❑ PLEASE REPLY ❑ PLEASE RECYCLE Traffic Volumes during School Peak Time Traffic volumes during school peak time at 7:15AM-7:45AM were extrapolated based on the 02/07/2019 counts. Figure 1 illustrates the year 2038 no build traffic volumes. Figure 2 illustrates the new trips generated by the 460 students. Figure 3 illustrates the year 2038 build traffic volumes. Note —Synchro analyzes traffic performance in an hourly manner. For analysis purpose, traffic volumes as shown in Figure 1, Figure 2, and Figure 3 are twice of the actual traffic volumes during 7:15AM- 7:45AM. These traffic volumes were applied as hourly volumes in Synchro to simulate the real traffic performance at the study intersection. Figure 12038 No Build Traffic Volumes AM 29SB EBT EBR WBL WBT SBL ISBT SBR 7:15 4 4 50 4 82 0 0 144 4-16 r 2 2 3 7:30 8 3 67 4 95 1 1 179 1 3554 41 r 234 1/2 Hour 12 7 117 8 177 1 1 323 Vehicle Fontaine Total Hour 24 14 234 16 354 2 2 646 ~ 24 PHF 0.91 14 Truck 1/2 Hour 1 0 0 1 2 1 0 HVP 9% 0% 0% 14% 2% 100% 0% 29 SB 1 EPRijc Figure 2 2038 Site Trips AM 29 SR EPR, PrC, ❑ENGINEERING ❑ PLANNING 902 E JEFFERSON ST. UNIT 101, CHARLOTTES❑ILLE, ❑A 22902 ■ 0 0 ■ «1 i 4 r Fontaine 186 ~ 64 29 SB Figure 3 2038 Build Traffic Volumes AM 29 SB 102 2 354 ~ 308 ine 210 ~ 78 29 SB EBT EBR WBL WBT SBL SBT SBR 7:15 37 13 0 58 0 0 20 128 7:30 56 19 0 88 0 0 30 193 1/2 Hour 93 32 0■ 0 0 ■ 321 Vehicle Total Hour 186 64 0 292 0 0 100 642 PHF Truck V2 Hour 1 0 0 1 0 0 0 HVP EBT EBR WBL WBT SBL 'SBT SBR 7:15 41 17, 50 62 82 0 20 272 7:30 64 22, 67 92 95 1 31 372 1/2 Hour 105 39 117 154177 1 51 644 Vehicle Total Hour 210 78 234 308, 354 2 102 1288 PHF 0.87 Truck 1/2 Hour 2 0 0 2 2 1 0 HVP 2% 0% 0% 1% 1% 100% 0% Traffic Volumes during Regular Peak Hour Traffic volumes during regular peak hour at 7:45AM-8:45AM were obtained from the 02/07/2019 counts. Figure 4 illustrates the year 2018 existing traffic volumes. Figure 5 illustrates the year 2038 no build traffic volumes. Ant 29 SB F 32 r 418 67 r 164 Fontaine ~ 43 18 29 SB Figure 4 2018 Existing Traffic Volumes Build Traffic Volumes AM 295 43 v G77 *J 1 4 Fontaine 4;i ~ 27 29 ,E GG r 244 Figure 5 2038 No 2 EPRp EPR, PAC. ❑ENGINEERING El PLANNING 902 E JEFFERSON ST. UNIT 101, CHARLOTTES❑ILLE, ❑A 22902 Traffic Results Traffic performance (LOS, delay provided in seconds, and queue length provided in feet) was analyzed and reported for the following scenarios - 1. 2038 School Peak Time (7:15AM-7:45AM) No Build AM; 2. 2038 School Peak Time (7:15AM-7:45AM) Build AM; 3. 2038 School Peak Time (7:15AM-7:45AM) Mitigation AM; 4. 2038 School Peak Time (7:15AM-7:45AM) Mitigation (WBL ONLY) AM; 5. 2038 Regular Peak Hour (7:45AM-8:45AM) No Build AM; 6. 2038 Regular Peak Hour (7:45AM-8:45AM) Mitigation AM. 1. 2038 School Peak Time (7:15AM-7:45AM) No Build AM Movement/Approach Fontaine EB Year 2038 No Build AM (7:15-7:45) Fontaine WB Rte 29 SB EBT/R WBL/T SBL/T/R Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/0.9 A 2.5 / B/13.0 q Approach LOS/Delay A/0.9 A/2.5 B/13.0 8.3 Movement Queue 0 53 193 2.2038 School Peak Time (7:15AM-7:45AM) Build AM Year 2038 Build AM (7:15-7:45) Movement Approach / Fontaine EB Fontaine WB Rte 29 SB EBT/R WBL/T SBL/T/R Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/2.1 A/4.3 F/194.7 F Approach LOS/Delay A/2.1 A/4.3 F/194.7 63.9 Movement Queue 9 121 570 3.2038 School Peak Time (7:15AM-7:45AM) Mitigation AM Year 2038 Mitigation AM (7:15-7:45) Movement/Approach Fontaine EB Fontaine WB Rte 29 SB EBT/R WBL WBT SBL/T SBR Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/2.2 A/3.6 A/1.1 F/116.4 A/5.3 D Approach LOS/Delay A/2.2 A/2.2 F/91.7 33.7 Movement Queue 13 82 0 > 500 > 300 Mitigation includes exclusive southbound right turn lane and exclusive westbound left turn lane. Mitigation does not include traffic signal control. 3 EPRPc EPR, P,C ❑ENGINEERING El PLANNING 902 E JEFFERSON ST. UNIT 101, CHARLOTTES❑ILLE, ❑A 22902 4.2038 School Peak Time (7:15AM-7:45AM) Mitigation (WBL ONLY) AM Year 2038 Mitigation (WBL ONLY) AM (7:15-7:45) Movement/Approach Fontaine EB Fontaine WB Rte 29 SB EBT/R WBL WBT SBL/T Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/2.2 A/3.7 A/1.1 F/157.4 F Approach LOS/Delay A/2.2 A/2.2 F/157.4 55.0 Movement Queue 16 84 4 > 500 In this scenario, mitigation includes exclusive westbound left turn lane only. Mitigation does not include exclusive southbound right turn lane or traffic signal control. S. 2038 Regular Peak Hour (7:45AM-8:45AM) No Build AM Year 2038 No Build AM (7:45-8:45, Peak Hour) Movement/Approach Fontaine EB Fontaine WB Rte 29 SB EBT/R WBL/T SBL/T/R Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.6 A/2.9 F/118.0 F Approach LOS/Delay A/1.6 A/2.9 F/118.0 70.8 Movement Queue 2 69 > 500 6. 2038 Regular Peak Hour (7:45AM-8:45AM) Mitigation AM Year 2038 Mitigation AM (7:45-8:45, Peak Hour) Fontaine EB Fontaine WB Rte 29 SB Movement/Approach EBT/R WBL WBT SBL/T SBR Overall 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.6 A/2.2 A/1.6 F/111.1 A/4.6 F Approach LOS/Delay A/1.6 A/2.1 F/103.5 64.5 Movement Queue 3 53 0 > 500 > 300 Mitigation includes exclusive southbound right turn lane and exclusive westbound left turn lane. Mitigation does not include traffic signal control. Based on the result tables as reported and summarized above - • In year 2038 school peak time no build am scenario, the delay for SB is 13.0 sec (LOS B) and the delay for the intersection is 8.3 sec (LOS A). • In year 2038 school peak time build am scenario, the delay for SB is 194.7 sec (LOS F) and the delay for the intersection is 63.9 sec (LOS F). • In year 2038 school peak time mitigation am scenario (including exclusive southbound right turn lane and exclusive westbound left turn lane), the delay for SB is 91.7 sec (LOS F) and the delay for the intersection is 33.7 sec (LOS D). • In year 2038 school peak time mitigation (WBL ONLY) am scenario (including exclusive westbound left turn lane only), the delay for SB is 157.4 sec (LOS F) and the delay for the intersection is 55.0 sec (LOS F). 4 , EPR, PAC, ❑ENGINEERING ❑ PLANNING EPR-)(I 9O2 E JEFFERSON ST. UNIT 101, CHARLOTTESDILLE, ❑A 22902 • In year 2038 regular peak hour no build am scenario, the delay for SB is 118.0 sec (LOS F) and the delay for the intersection is 70.8 sec (LOS F). • In year 2038 regular peak hour mitigation am scenario (including exclusive southbound right turn lane and exclusive westbound left turn lane), the delay for 56 is 103.5 sec (LOS F) and the delay for the intersection is 64.5 sec (LOS F). Findings and Conclusions Comparing the results as summarized for the different scenarios, the findings and conclusions of this memorandum are as followings — • The mitigations of exclusive southbound right turn lane and exclusive westbound left turn lane at the study intersection are critical to improve the traffic performance during school peak time of 7:15AM-7:45AM after the school is built. With both exclusive turn lanes, the SB delay could be shortened from 194.7 sec to 91.7 sec and the intersection delay could be shortened from 63.9 sec to 33.7 sec, which are better than the delays for SB and the intersection during regular peak hour of 7:45AM-8:45AM. • The mitigations of exclusive southbound right turn lane and exclusive westbound left turn lane at the study intersection can also benefit the traffic performance during regular peak hour of 7:45AM-8:45AM. With both exclusive turn lanes, the SB delay could be shortened from 118.0 sec to 103.5 sec and the intersection delay could be shortened from 70.8 sec to 64.5 sec. 5 EPRiv EPR, PAC. ❑ENGINEERING ❑ PLANNING 902 E JEFFERSON ST. UNIT 1 01, CHARLOTTES❑ILLE, ❑A, 22902 END OF MEMORANDUM