HomeMy WebLinkAboutSP201800011 Study 2019-03-06EPfOEPR� "ENGINEERING & PLANNING RESOURCES"
S(, �' 9O2 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902
MEMORANDUM
TO: JUSTIN SHIMP, P.E.
ORGANIZATION: SHIMP ENGINEERING
PHONE NUMBER:
RE: REGENTS SCHOOL SITE TRAFFIC ASSESSMENT
SUPPLEMENT
FROM: BILL WUENSCH, P.E., PTOE;
WEI HE
DATE: MARCH 6, 2019
SENDER'S REFERENCE NUMBER:
YOUR REFERENCE NUMBER:
❑ 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
Trips
100
63
45
72
200
127
91
143
EPRpc EPR, PrC. "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
AM 29 SB
2 i 2 238 4-14
41 j y r 158
Fontaine
22 04
29 SB
2028 No Build Traffic Volumes
EBT
EBR
WBL
WBT
SBL
SOT
SBR
Total
7:15
4
3
34
4
55
0
0
100
•
Vehicle 7:30
7
2
45
3
64
1
1
123
Total
1/2 Hour
11
5
79
7
119
1
1
223
Hour
22
10
158
14
238
2
2
446
PHF
0.91
Truck
1/2 Hour
1
0
0
1
2
1
0
HVP
9%
05%
0%
14%
2%
100%
0%
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
2
4J
Fontaine
29 SB
29 SB
14
192
EBT
EBR
WBL
WBT
SBL SET
SBR
Total
7:15
4
4
41
4
67 0
0
120
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%
EPRpEPR, PAC. "ENGINEERING & PLANNING RESOURCES"
902 E 1EFFERSON 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.
3 Site Trip Distribution
29 SO
M 0 0
«J t 4
29 SO
4-0
r 0
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
1
! AM 29 S8
Fontaii
29 SO
■
r 0
2028 Build Traffic Volumes
EBT
EBR
WBL WBT SOL SOT
SBR Total
7:15
18
6
0 29 0
0 10 63
Vehicle 7:30
28
10
0 44 0
0 15 97
Total
1/2 Hour
46
16
00 0
00 160
Hour
92
32
0 146 0
O 50 320
PHF
Truck
1/2 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, P,C. "ENGINEERING & PLANNING RESOURCES"
EpR ), 902 E JEFFERSON ST. UNIT 101, CHARLOTTESVILLE, VA 22902
Figure 5 2028 Build Traffic Volumes
AM 29 SB EBT EBR WBL WBT SBL SB
52 2 29
J 4 4
Fontaine
29 SB
~ 160
T 192
T SBR
Total
7:15
22
10
41
33
67 0
10
183
Vehicle 7:30
36
12
55
47
78 1
16
245
Total
112 Hour
58
22
96
80
145 1
26
428
Hour
116
44
192
160
290 2
52
856
PHE
0.87
Truck
1/2 Hour
2
0
0
2
2 1
0
HVP
3%
0%
0%
3%
1% 100%
0%
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:
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/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
EPR, PAC. "ENGINEERING & PLANNING RESOURCES"
EPRj902 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/4SA
D
Approach LOS/Delay
A/1.5
A/2.3
E/45.4
30.1
Movement Queue
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.
EPR) 3 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
27
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