HomeMy WebLinkAboutSP201800011 Study 2019-06-14EPR, PAC. "ENGINEERING & PLANNING RESOURCES"
EPM)c 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: JUNE 14, 2019
PHONE NUMBER:
SENDER'S REFERENCE NUMBER:
RE: REGENTS SCHOOL SITE TRAFFIC ASSESSMENT YOUR REFERENCE NUMBER:
SUPPLEMENT YEAR 2028 WITH 280 STUDENTS
❑ URGENT X FOR YOUR USE ❑ PLEASE COMMENT ❑ PLEASE REPLY ❑ PLEASE RECYCLE
The purpose of this memorandum is to summarize a supplemental traffic analysis for the
proposed Regents School Site to examine the impact of the proposed Regents School with 280
students on Fontaine Avenue/Route 29 Southbound Ramp intersection in the future year 2028.
To accomplish the goal, this analysis assumed the school start time being 7:45 AM and all
school trips arriving in the morning between 7:15-7:45 AM to examine the future year 2028
build conditions between 7:15-7:45 AM. The proposed Regents School was assumed to have
280 students in the future year 2028. The future year 2028 build conditions between 7:15-7:45
AM were then compared to the future year 2028 no build conditions in the commuter AM peak
hour, which was obtained from the prior Regents School Site Traffic Assessment (10/12/2018),
which evaluated the impact of the proposed Regents School with 280 students in the future
year 2028 during the typical commuter peak hour.
The following provides a brief summary of this information.
Trip Generation
The trip generation of the proposed Regents School with 280 students was calculated using the
same methodology as in the prior Regents School Site Traffic Assessment (10/12/2018) and
summarized in Table 1 below.
Table 1 Trip Generation with 280 Students
Scenario
2028 AM w/ 280 students
2028 PM w/ 280 students
In/Out
Inbound
Outbound
Inbound
Outbound
Total Trips
121
77
55
87
EPW( EPR, PrC. "ENGINEERING & PLANNING RESOURCES"
902 E 1EFFERSON ST. UNIT 101 CHARLOTTESVILLE VA 22902
Traffic Volumes
2028 No Build Traffic Volumes between 7:15-7.45 AM
2028 no build traffic volumes between 7:15-7:45 AM was obtained from a prior supplement
(3/6/2019) and illustrated in Figure 1 below.
Figure 12028 No Build Traffic Volumes between 7:15-7:45 AM
AM 29 SB
2 2 290 F 14
4 r 192
Fontaine
24
12
29 SB
Site Trip Distribution and Assignment
EBT
EBR
WBL
WBT
SBL 'SBT
SBR
Total
r
7:15
4
4
41
4
67
0 0
120
r
Vehicle 7:30
8
2
55
3
78
1 1
148
Total
1/2 Hour
12
6
96
7
145
1 1
268
Hour
24
12
192
14
290
2 2
536
PHF
0.91
Truck
1/2 Hour
1
0
0
1
2
1 0
HVP
9%
0%
0%
14%
2% 100%
0%
Trip distribution was also obtained from the prior supplement (3/6/2019) and illustrated in
Figure 2 below. 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 2 Site Trip Distribution
AM 29 SB
■ ■
I
f 0 0
Fontaine
L
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 280
students are summarized and doubled for Synchro traffic analysis purpose as illustrated in
Figure 3 below.
EPRP("
EPR,PAC. "ENGINEERING & PLANNING RESOURCES„
902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VFW 22902
Figure 3 2028 Site Trips with 280 Students
AAA
29 SB
~ ■
7:15
0
0
Vehicl 7:30
■
L
eTotal
i
0 1
1/2 Hour
Fontain
Hour
~
112
PHf
8 3
Truck
i/2 Hour
HVP
29 S B
EBT EBR WBL WBT SBL SBT SBR Total
22 8 0 35 0 0 12 77
34 11 0 53 0 0 18 116
56 19 00 0 0■ 193
112 38 0 176 0 0 60 386
1 0 0 1 0 0 0
2028 Build Traffic Volumes between 7:15-7.45 AM
Combining the background traffic with the site trips as shown, Figure 4 below illustrates the
build condition traffic volume calculation.
Figure 4 2028 Build Traffic Volumes between 7:15-7:45 Ann
EBT
EBR
WBL
WBT
SBL SBT
SBR
Total
7:15
26
12
41
39
67
0 12
197
Vehicl 7:30
42
13
55
56
78
1 19
264
e Total
1/2 Hour
68
25
96
95
145
1 31
461
Hour
136
50
192
190
290
2 62
922
PHF
0.87
Truck
1/2 Hour
2
0
0
2
2
1 0
HVP
3%
0%
0%
2%
1% 100%
0%
2028 Build Conditions between 7:15-7:45 AM
The future year 2028 build conditions between 7:15-7:45 AM were analyzed in
Synchro/SimTraffic 9.2. It should be noted that, the same as in the prior Regents School Site
Traffic Assessment (10/12/2018) and prior supplements, SimTraffic was utilized for the level of
service, delay, and queue analyses. The following Table 2 summarizes the analysis results:
Table 2 2028 Build Conditinnc hatuwoan 7.1 r-7•AC Ann
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/3.2
D/27.7
B
Approach LOS/Delay
A/1.7
A/3.2
D/27.7
12.0
Movement Queue
11
87
350
E(PRY `, EPR, PAC. "ENGINEERING & PLANNING RESOURCES'
l902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902
2028 No Build Conditions in Commuter AM Peak Hour
The future year 2028 no build conditions traffic analysis results were obtained from the prior
Regents School Site Traffic Assessment (10/12/2018) for comparison purpose. The following
Table 3 summarizes the analysis results:
Table 3 2028 No Build Conditions in Commuter AM Peak How
Year 2028 No Build AM
Movement/Approach
Fontaine EB
Fontaine WB
Rte 29 SB
Overall
EBT/R
WBL/T
SBL/R
I. Rte 29/Fontaine SB
Movement LOS/Delay
A/1.S
A/2.3
E/45.4
D
Approach LOS/Delay
A/1.S
A/2.3
E/45.4
30.1
Movement Queue
4
S7
> 500
Finding: comparison of 2028 Build Conditions between 7:15-7:45 AM and 2028 No Build
Conditions in Commuter AM Peak Hour
Comparing analysis results above, the finding of this study effort is —the traffic operation in the
future year 2028 build conditions between 7:15-7:45 AM is better than in the future year 2028
no build conditions in commuter AM peak hour:
• The overall intersection level of service is LOS B in the future year 2028 build conditions
between 7:15-7:45 AM, while it is LOS D in the future year 2028 no build conditions in
commuter AM peak hour.
• The overall intersection delay is 12.0-seconds in the future year 2028 build conditions
between 7:15-7:45 AM, while it is 30.1-seconds in the future year 2028 no build
conditions in commuter AM peak hour.
• Route 29 southbound ramp delay is 27.7-seconds, which falls at the lower end of LOS D,
in the future year 2028 build conditions between 7:15-7:45 AM, while it is 45.4-seconds,
which falls at the upper end of LOS E, in the future year 2028 no build conditions in
commuter AM peak hour.
• Route 29 southbound ramp queue is 350 feet in the future year 2028 build conditions
between 7:15-7:45 AM, while it is longer than 500 feet in the future year 2028 no build
conditions in commuter AM peak hour.
End of Memorandum
Attachment: 2028 Build Conditions Between 7:15-7:45 AM SimTraffic Reports
SimTraffic Performance Report
2028 Build AM_280 Students 06/11/2019
1: Rte 29 SB On-Ramp/Rte 29 SB Off -Ramp & Fontaine Performance by lane
-------------
Movements Served TR LT LTR
Denied Del/Veh (s) 0.4
Total Del/Veh (s) 1.7 3.2 27.7 12.0
Total Network Performance
Denied Del/Veh (s) 0.4
Total Del/Veh (s) 12.7
Regents School Study Supplement EPR SimTraffic Report
Page 1
Queuing and Blocking Report
2028 Build AM 280 Students 06/13/2019
Intersection: 1: Rte 29 SB On-Ramp/Rte 29 SB Off -Ramp & Fontaine
Directions Served
Maximum Queue (ft)
Average Queue (ft)
95th Queue (ft)
Link Distance (ft)
Upstream Blk Time (%)
Queuing Penalty (veh)
Storage Bay Dist (ft)
Storage Blk Time (%)
Queuing Penalty (veh)
Network Summary
Network wide Queuing Penalty: 0
TR
LT
LTR
11
87
350
0
32
125
5
69
268
708
507
520
0
0
egen s c ool Study Supplement
EPR SimTraffic Report
Page 1