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HomeMy WebLinkAboutSDP202000052 Study Traffic Study 2019-03-06EPRpc EPR, PAC. "ENGINEERING & PLANNING RESOURCES" 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 MEMORANDUM TO: JUSTIN SHIMP, P.E. FROM: BILL WUENSCH, P.E., PTOE; WEI HE ORGANIZATION: SHIMP ENGINEERING DATE: MARCH 6, 2019 PHONE NUMBER: SENDER'S REFERENCE NUMBER: RE: REGENTS SCHOOL SITE TRAFFIC ASSESSMENT YOUR REFERENCE NUMBER: SUPPLEMENT URGENT X FOR YOUR USE PLEASE COMMENT PLEASE REPLY PLEASE RECYCLE The purpose of this memorandum is to summarize a supplemental traffic assessment for the proposed Regents School Site. This document was performed to examine the impact of the proposed Regents School on Fontaine Avenue/Route 29 Southbound Ramp intersection assuming the school with the start time of 7:45 AM. To accomplish the goal, this analysis examined the future year 2028 conditions and assumed that all school trips arrived in the morning between 7:15-7:45AM. The no build and build conditions were analyzed as needed to compare future build conditions with future no build conditions. The future build conditions were also compared to the future build conditions from the prior Regents School Site Traffic Assessment (10/12/2018) which summarized the impact of the proposed Regents School on the AM peak hour. The following provides a brief summary of this information. Trip Generation The trip generation was obtained from the prior Regents School Site Traffic Assessment 10/12/2018) and summarized below. Table 1 Trip Generation Scenario 2028 AM 2028 PM 2038 AM 2038 PM In/Out Inbound Outbound Inbound Outbound Inbound Outbound Inbound Outbound Total 100 63 45 72 200 127 91 143 Trips EPRpc EPR, PAC. "ENGINEERING & PLANNING RESOURCES" 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 Traffic Volumes Existing Traffic Volumes The existing traffic counts were performed at Fontaine Avenue/Route 29 Southbound Ramp intersection on Thursday, February 7th, 2019, a typical weekday when no special events occurred. The traffic count document is attached. For analysis purposes, this effort examined the traffic volumes between 7:15-7:45AM and doubled the traffic volumes between 7:15-7:45AM for Synchro traffic analysis as needed for a design hour volume equivalent. Figure 1 illustrates the traffic volume calculation and the traffic volumes (hour) that were analyzed. Figure 1 Existing Traffic Volumes M 29 SB EBT EBR WBL WBT SBL SBT SBR Total 7:15 4 3 34 4 55 0 0 r 100 2 2 238 14 Vehicle 7:30 7 2 45 3 64 1 1 123 Total 158 1/2 Hour 11 5 79 7 119 1 1 223 Fontaine Hour 22 10 158 14 238 2 2 446 y 22 P H F 0.91 Truck 10 1/2 Hour 1 0 0 1 2 1 0 HVP 9% 0% 0% 14% 2°% 100% 0% 29 5B 2028 No Build Traffic Volumes Also, growth rates from the prior Regents School Site Traffic Assessment (10/12/2018) were utilized for this analysis. Figure 2 illustrates the year 2028 no build traffic volume calculation. Figure 2 2028 No Build Traffic Volumes AM 29 SB EBT EBR WBL WBT SBL SBT SBR Total 7:15 4 4 41 4 67 0 0 120 4- 1422290 Vehicle 7:30 8 2 55 3 78 1 1 149 4 Lo Total 192 1/2 Hour 12 6 96 7 145 1 1 268 Fontaine Hour 24 12 192 14 29C 2 2 536 y 24 P H F 0.91 Truck 12 1/2 Hour 1 0 0 1 2 1 0 HVP 9% 0% 0% 14% 2% 100% 0% 29 SB EPRpc EPR, PAC. "ENGINEERING & PLANNING RESOURCES" 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 Site Trip Distribution and Assignment Trip distribution was also obtained from the prior Regents School Site Traffic Assessment 10/12/2018). Figure 3 illustrates the assumed trip distribution. It should be noted that 2% of the trips were assumed from/to the local residential area along Buckingham Circle, Reservoir Road, and Foxhaven Farm. figure 3 Site Trip Distribution AM 29 SB 0 0 73% i 4 r o Fontaine 73% 25% 29 SB The site trips were assigned to the road network based on the trip generation and the distribution as noted above. The build condition site trips for the future year 2028 with 230 students are summarized and doubled for Synchro traffic analysis as illustrated in Figure 4. Figure 4 2028 Site Trips AM 29 SB 50 0 0 j 1 4 Fontaine 29 SB 2028 Build Traffic Volumes EBT EBR WBL WBT SBL SBT SBR Total 7:15 18 6 0 29 0 0 1c 63 Vehicle 7:30 28 10 0 44 0 0 15 97 Total 1/2 Hour 46 16 OF 0 0 160 Hour 92 32 0 146 0 0 50 320 PHF Truck 112 Hour 1 0 0 1 0 0 0 HVP Combining the background traffic with the site trips as shown, Figure 5 illustrates the build condition traffic volume calculation. EPR, PAC. "ENGINEERING & PLANNING RESOURCES" EPRpc 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 Figure 5 2028 Build Traffic Volumes AM 29 S3 EBT ERR WBL WRT SBL SRT SBR Total 7:15 22 10 41 33 57 0 10 193 52 2 290 160 Vehicle 7:30 35 12 55 47 78 1 15 245 Total 192 1/2 Hour 58 22 96 80 145 1 25 428 Fontaine Hour 115 44 192 160 290 2 52 856 116 P H F 0.87 44 Truck 1/2 Hour 2 0 0 2 2 1 0 HVP 3% 0% 0% 3% 1% 100% 0% 29 SB Traffic Impact Assessment of the Proposed Regents School on 7:15-7:45AM The future year 2028 no build and build conditions were analyzed as needed to compare future build conditions with future no build conditions. It should be noted that, the same as in the prior Regents School Site Traffic Assessment (10/12/2018), SimTraffic was utilized for the level of service, delay, and queue analyses. The following tables summarize the analysis results: Existine AM Existing AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/0.7 A/2.1 A/8.2 A Approach LOS/Delay A/0.7 A/2.1 A/8.2 5.3 Movement Queue 0 35 118 2028 No Build AM Year 2028 No Build AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/0.8 A/2.3 B/10.3 A Approach LOS/Delay A/0.8 A/2.3 B/10.3 6.6 Movement Queue 0 53 159 2028 Build AM Year 2028 Build AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.5 A/2.8 C/22.1 B Approach LOS/Delay A/1.5 A/2.8 C/22.1 10.4 Movement Queue 4 80 297 EPRpc EPR, PAC. "ENGINEERING & PLANNING RESOURCES" 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 Based on the analysis results, the traffic operation in the future year 2028 build conditions will be acceptable with the proposed Regents School with the start time of 7:45AM. The overall intersection level of service will be LOS B, the level of service for Fontaine Avenue will be at LOS A, and the level of service for Route 29 Southbound Ramp will be LOS C. The queue on Route 29 Southbound Ramp will be manageable at approximately 300 feet. Comparison to the Impact of the Proposed Regents School on the AM Peak Hour The future year 2028 no build and build conditions traffic analysis results were obtained from the prior Regents School Site Traffic Assessment (10/12/2018) for comparison purpose. The following tables summarize the analysis results from the prior Regents School Site Traffic Assessment (10/12/2018): Existing AM Existing AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.3 A/2.1 C/16.3 B Approach LOS/Delay A/1.3 A/2.1 C/16.3 11.1 Movement Queue 0 51 316 2028 No Build AM Year 2028 No Build AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.5 A/2.3 E/45.4 D Approach LOS/Delay A/1.5 A/2.3 E/45.4 30.1 Movement Queue 7 4 57 500 2028 Build AM Year 2028 Build AM Movement/Approach Fontaine EB Fontaine WB Rte 29 SB Overall EBT/R WBL/T SBL/R 1. Rte 29/Fontaine SB Movement LOS/Delay A/1.7 A/2.7 F/115.7 F Approach LOS/Delay A/1.7 A/2.7 F/115.7 64.5 Movement Queue 8 73 500 Based on the results above, assuming the school start time at background traffic peak hour, in the future year 2028 build conditions, the overall intersection level of service will be a failing level of service LOS F, the level of service for the Fontaine Avenue approach will be at LOS A, and the level of service for Route 29 Southbound Ramp will be LOS F. The queue on Route 29 Southbound Ramp will spill back onto Route 29. Comparing the traffic impacts of the proposed Regents School on 7:15-7:45AM and on AM peak hour, the impact on 7:15-7:45AM is minor and manageable. EPRpc EPR, PAC. "ENGINEERING & PLANNING RESOURCES" 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902 Findings Based on the analysis performed in this memorandum, the principal findings are as followings — 1. The traffic operations in the future year 2028 build conditions will be acceptable with the proposed Regents School with the start time of 7:45AM. The overall intersection level of service will be LOS B, the level of service for Fontaine Avenue will be at LOS A, and the level of service for Route 29 Southbound Ramp will be LOS C. The queue on Route 29 Southbound Ramp will be manageable at approximately 300 feet. 2. Assuming the school start time at during the background traffic peak hour (after 7:45AM), in the future year 2028 build conditions, the overall intersection level of service will be failing level of service LOS F, the level of service for Fontaine Avenue will be at LOS A, and the level of service for Rte 29 Southbound Ramp will be LOS F. The queue on Rte 29 Southbound Ramp will spill back onto Rte 29. 3. Comparing the traffic impacts of the proposed Regents School on 7:15-7:45AM and on AM peak hour, the impact on 7:15-7:45AM is minor and manageable. End of Memorandum - Attachment: Traffic Count Document Turn Count Summary 2 of 3 Intersection Peak Hour Location: Fontaine at aannP, GPS Coordinates: Lat 38 027072, Lon.-70.530188 2019-02-07 Day of week: Thursday Weather: Analyst: Total vehicle traffic 00 On uft FThrUTR ght it tin Left I Thin Right r J Left Thin Right get tinhiftThin Right Car traffic o©00000©©000m m©000000©000® o0olv0000©moos m oovoom©moo 000lv0000000© Truck traffic 00000000000© 000000000000© 000000000000© 000000000©000 000000000000 07:45 - 08:45 molv0000m o®® Peak Hour Vehicle Summary hue Tons11 Intersection Peak Hour 0745 - AD Ala