HomeMy WebLinkAboutZMA201000017 Study 2012-03-08 (2)Epn ENGINEERING & PLANNING RESOURCES, P.C.
3205 WATTS STATION DRIVE, CHARLOTTESVILLE, VA 2291 1
Memorandum
To: Scott Collins, P.E.
From:Bill Wuensch, P.E., PTOE
CC: Kirsten Munz, P.E., AICP
Date: 7/18/2011
Re: Redfields
The following provides a summary of additional analyses conducted for the Redfields development
application. The supplemental analyses are in response to additional information requested based on
the County /VDOT review of the initial traffic study document.
Methodology
In the initial study, the traffic from this phase of Redfields was applied to the background traffic
counts conducted in Spring of this year. The operating assumption at that time was that there is only a
minor difference in the counted volumes from what might have been there had UVA been in normal
class schedule session, and the background growth in traffic was primarily the new Redfields traffic.
Since all levels of service were in the A to B range, no additional factoring of the traffic was included.
The initial analyses included three intersections with Sunset Avenue Extended (Mountainwood,
Redfields, Country Green).
For the new analyses, we have taken a more conservative (higher volume factoring) approach to the
volume development, pushed out the analysis year to 2019, and also considered three additional
intersections along Old Lynchburg Road, including Mountainwood, Country Green, and Sunset Ave.
For the development of the new volumes, additional factors were considered. Two tables are
provided on the following pages that show how the new volume sets were developed. For the initial
three intersections (along Sunset Ave.), additional steps were taken including:
1. Growing the existing counts by 2% per year to year 2019.
2. Accounting for additional Woodlands development, doubled the traffic turning to and from
Mountainwood (from Sunset) that did not originate or travel to Redfields.
3. Adding in the new Redfields traffic site trips.
4. Increasing existing AM traffic by 15% and PM traffic by 50 %. This was derived by comparing
the Biscuit Run ingress /egress volumes for 2006 with that ingress /egress intersection traffic at
Country Green / Sunset Ave. as counted this year.
am pm
total egress 2006 compares the vols at OLR /Sunset and OLR Country Green
337 281 with the recent count at Redfields / Country Green /Sunset
total egress 2011
293 138
Conclusion — current
counts are:
AM - about 13% less, and distribution is different
PM - about 50% less, and distribution is more towards OLR /5th St.
5. Summing up these trips ( existing + background growth + Woodlands + new Redfields +
additional traffic for UVA)
6. Then redistribution of the Sunset / Redfields traffic based on inspection of the Biscuit Run
counts. At present, there is a higher distribution going to the Old Lynchburg Road (5 Street
Extended end) than was present in the Biscuit Run study. This might be due to the JPA bridge
being out of service.
For the Old Lynchburg Road intersections, the following adjustments were made to the Biscuit
Run counts to account for recent growth and the new site traffic.
1. Factored the 2006 counts by 2% per year to year 2019 for background growth.
2. Added in trips for additional 156 Woodlands residences.
3. Added in the new Redfields Trips
4. Summed to a new 2019 total.
See the following table that summarize the traffic volume buildup process.
2
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Findings
At each of the intersections analyzed, each movement operates at LOS A, B, or C in the future
with the exception of the following movements. (see the Synchro outputs in the appendix for the
specific delays and LOS)
1. Mountainwood at Old Lynchburg Road — in the PM the westbound left turn, which has only 9
vehicles, operates at LOS D.
2. Sunset Avenue at Old Lynchburg Road — the Sunset Avenue approach functions at LOS E in the
future AM peak hour. The approach volume is projected to be 336 VPH, the average delay is
39 seconds and the 95 percentile queue is projected to be 200 feet (about eight vehicles).
The projected volume could meet the peak hour signal warrant, but the four hour volume
warrant, and eight hour volume warrants would not be satisfied. Since there are multiple
ways for this traffic to flow, including accessing the intersection of 5 Street Extended /Old
Lynchburg Road via Country Green Road, there may be a shift over to that intersection
depending on the eventual delays and travel times between intersections.
Conclusion
Based on the findings, the intersection of Sunset Avenue at Old Lynchburg Road is the only
intersection that was analyzed that might experience a significant increase in delays and
queuing in the AM peak hour of the day in the future years. The option of separating out the
left turns from the right / throughs was examined, though there was little difference in
queuing and delay since the right turn and through volumes are minimal.
Recommendation
This intersection of concern should be monitored in the future relative to safety concerns
for the left turning vehicles onto Old Lynchburg Road.
Strategies for mitigating this situation could range from signalization, if warranted after
conducting a signal warrant study — which at this point does not appear to be likely, or
through reconstructing the median opening to restrict that outbound left turn movements.
This would force all of that traffic (336 vehicles per hour) over to the Old Lynchburg Road
intersection to the north, which would likely force the issue for signalization.
END OF MEMORANDUM
5
HCM Unsignalized Intersecffon Capacity Analysis Refields 2019 Intersections AM
3: Country Green & Sunset
II
7/18/2011
Movement WBL WBR NBT NBR SBL SBT
Lane Configurations 4
Sign Control Stop Stop Stop
Volume (vph)1 28 85 4 104 311
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)1 30 92 4 113 338
Direction, Lane #WB 1 NB 1 SB 9
Volume Total (vph)32 97 451
Volume Left (vph)1 0 113
Volume Right (vph)30 4 0
Hadj (s)0.54 0.01 0.08
Departure Headway (s)4.5 4.4 4.2
Degree Utilization, x 0.04 0.12 0.52
Capacity (veh /h)703 786 848
Control Delay (s)7.7 8.0 11.6
Approach Delay (s)7.7 8.0 11.6
Approach LOS A A B
intersection Summary
Delay 10.8
HCM Level of Service B
Intersection Capacity Utilization 38.8%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
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HCM Unsignalized IntersecfT"on Capacity Analysis ReZfields 2019 Intersections AM
5: Redfields & Sunset 7/18/2011
t 4"
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations 4 I
Volume (veh /h)9 237 62 53 180 6
Sign Control Stop Free Free
Grade 0%0% 0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)10 258 67 58 196 7
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 391 199 202
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 391 199 202
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %98 69 95
cM capacity (veh /h)583 842 1370
Direction, Lane #` .. ,..EB 1 NB 1 SB 1
Volume Total 267 125 202
Volume Left 10 67 0
Volume Right 258 0 7
cSH 829 1370 1700
Volume to Capacity 0.32 0.05 0.12
Queue Length 95th (ft)35 4 0
Control Delay (s)11.4 4.4 0.0
Lane LOS B A
Approach Delay (s)11.4 4.4 0.0
Approach LOS B
Inter Summary
Average Delay 6.0
Intersection Capacity Utilization 41.2%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
Page 2
H'CM Unsignalized Intersecff n Capacity Analysis RefTieIds 2019 Intersections AM
7: Mountainwood & Sunset
II
7/18/2011
t.
Movement WBL WBR NBT NBR SBL SBT
Lane Configurations r 4
Volume (veh /h)14 25 46 9 57 168
Sign Control Stop Free Free
Grade 0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)15 27 50 10 62 183
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 361 55 60
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 361 55 60
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %98 97 96
cM capacity (veh /h)612 1012 1544
Direction, Lane #WB 1 NB 1 SB 1
Volume Total 42 60 245
Volume Left 15 0 62
Volume Right 27 10 0
cSH 820 1700 1544
Volume to Capacity 0.05 0.04 0.04
Queue Length 95th (ft)4 0 3
Control Delay (s)9.6 0.0 2.1
Lane LOS A A
Approach Delay (s)9.6 0.0 2.1
Approach LOS A
intersection Summary
Average Delay 2.7
Intersection Capacity Utilization 28.7%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
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HCM Unsignalized IntersectrOn Capacity Analysis Refiields 2019 Intersections AM
12: country green & olr 7/18/2011
I i 4 /
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations 19 4
Volume (veh /h)64 42 79 146 133 33
Sign Control Stop Free Free
Grade 0%0% 0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)70 46 86 159 145 36
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 493 162 180
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 493 162 180
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %86 95 94
cM capacity (veh /h)502 882 1395
Direction, Lane if EB 1 NB 1 NB 2 SB 1
Volume Total 115 86 159 180
Volume Left 70 86 0 0
Volume Right 46 0 0 36
cSH 606 1395 1700 1700
Volume to Capacity 0.19 0.06 0.09 0.11
Queue Length 95th (ft)17 5 0 0
Control Delay (s)12.3 7.7 0.0 0.0
Lane LOS B A
Approach Delay (s)12.3 2.7 0.0
Approach LOS B
intersection Summary
Average Delay 3.9
Intersection Capacity Utilization 29.5%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
Page 4
HCM Unsignalized Intersectf n Capacity Analysis ROfields 2019 Intersections AM
15: Mountainwood & OLR 7/18/2011
T 4- k P 4/
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations 4 4+r 4+
Volume (veh /h)120 0 73 9 0 8 34 166 25 3 118 37
Sign Control Stop Stop Free Free
Grade 0%0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)130 0 79 10 0 9 37 180 27 3 128 40
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 418 436 148 489 429 180 168 208
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 418 436 148 489 429 180 168 208
tC, single (s)7.1 6.5 6.2 7.1 6.5 6.2 4.1 4.1
tC, 2 stage (s)
tF (s)3.5 4.0 3.3 3.5 4.0 3.3 2.2 2.2
p0 queue free %75 100 91 98 100 99 97 100
cM capacity (veh /h)528 499 898 437 503 862 1409 1363
Direction, Lane #EB 1 WB 1 NB 1 NB 2 NB 3 SB 1
Volume Total 210 18 37 180 27 172
Volume Left 130 10 37 0 0 3
Volume Right 79 9 0 0 27 40
cSH 626 569 1409 1700 1700 1363
Volume to Capacity 0.34 0.03 0.03 0.11 0.02 0.00
Queue Length 95th (ft)37 3 2 0 0 0
Control Delay (s)13.6 11.5 7.6 0.0 0.0 0.2
Lane LOS B B A A
Approach Delay (s)13.6 11.5 1.2 0.2
Approach LOS B B
Intersection Summary
Average Delay 5.2
Intersection Capacity Utilization 42.0%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
Page 5
HCM Unsignalized Intersectt n Capacity Analysis Re"Wields 2019 Intersections AM
19: Sunset & OLR /5th St Extd 7/18/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations 4.I t*11 r
Volume (veh /h)336 10 21 10 10 20 36 349 10 20 202 68
Sign Control Stop Stop Free Free
Grade 0%0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)365 11 23 11 11 22 39 379 11 22 220 74
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type Raised Raised
Median storage veh)1 1
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 558 732 110 645 800 195 293 390
vC1, stage 1 conf vol 263 263 463 463
vC2, stage 2 conf vol 295 468 182 337
vCu, unblocked vol 558 732 110 645 800 195 293 390
tC, single (s)7.5 6.5 6.9 7.5 6.5 6.9 4.1 4.1
tC, 2 stage (s)6.5 5.5 6.5 5.5
tF (s)3.5 4.0 3.3 3.5 4.0 3.3 2.2 2.2
p0 queue free %22 97 98 97 97 97 97 98
cM capacity (veh /h)471 413 923 422 395 813 1265 1165
Direction, Lane #EB 1 WB 1 NB 1 NB 2 NB 3 SB 1 SB 2 SB 3 SB 4
Volume Total 399 43 39 253 137 22 110 110 74
Volume Left 365 11 39 0 0 22 0 0 0
Volume Right 23 22 0 0 11 0 0 0 74
cSH 482 543 1265 1700 1700 1165 1700 1700 1700
Volume to Capacity 0.83 0.08 0.03 0.15 0.08 0.02 0.06 0.06 0.04
Queue Length 95th (ft)202 6 2 0 0 1 0 0 0
Control Delay (s)39.1 12.2 7.9 0.0 0.0 8.1 0.0 0.0 0.0
Lane LOS E B A A
Approach Delay (s)39.1 12.2 0.7 0.6
Approach LOS E B
intersection Summary
Average Delay 14.0
Intersection Capacity Utilization 50.4%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build AM Synchro 7 - Light: Report
Page 6
HCM Unsignalized Intersect`lr'n Capacity Analysis Redfields 2019 Intersections
3: Country Green & Sunset 7/18/2011
Movement WBL WBR NBT NBR SBL SBT
Lane Configurations 4
Sign Control Stop Stop Stop
Volume (vph)33 344 121 23 83 164
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)36 374 132 25 90 178
Direction, Lane #WB 1 NB'1 SB 1
Volume Total (vph)410 157 268
Volume Left (vph)36 0 90
Volume Right (vph)374 25 0
Hadj (s)0.50 0.06 0.10
Departure Headway (s)4.5 5.3 5.3
Degree Utilization, x 0.52 0.23 0.39
Capacity (veh /h)754 621 644
Control Delay (s)12.3 9.8 11.6
Approach Delay (s)12.3 9.8 11.6
Approach LOS B A B
Intersection Summary
Delay 11.6
HCM Level of Service B
Intersection Capacity Utilization 54.1%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
Page 1
HCM Unsignalized IntersectIt n Capacity Analysis Redfields 2019 Intersections
5: Redfields & Sunset 7/18/2011
4 \t d
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations rj'''4
Volume (veh /h)9 133 221 72 111 6
Sign Control Stop Free Free
Grade 0%0% 0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)10 145 240 78 121 7
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 683 124 127
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 683 124 127
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %97 84 84
cM capacity (veh /h)347 927 1459
Direction, Lane #EB 1 NB 1 SB 1
Volume Total 154 318 127
Volume Left 10 240 0
Volume Right 145 0 7
cSH 838 1459 1700
Volume to Capacity 0.18 0.16 0.07
Queue Length 95th (ft)17 15 0
Control Delay (s)10.3 6.3 0.0
Lane LOS B A
Approach Delay (s)10.3 6.3 0.0
Approach LOS B
Intersection Summary
Average Delay 6.0
Intersection Capacity Utilization 38.1 %ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
Page 2
HCM Unsignalized Intersection Capacity Analysis Redfields 2019 Intersections
7: Mountainwood & Sunset 7/18/2011
Movement WBL WBR NBT NBR SBL SBT
Lane Configurations 4
Volume (veh /h)17 109 127 17 25 99
Sign Control Stop Free Free
Grade 0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)18 118 138 18 27 108
Pedestrians
Lane Width (ft)
Walking Speed (fl/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 309 147 157
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 309 147 157
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %97 87 98
cM capacity (veh /h)670 900 1423
Direction, Lane #WB 1 NB 1 SB 1
Volume Total 137 157 135
Volume Left 18 0 27
Volume Right 118 18 0
cSH 860 1700 1423
Volume to Capacity 0.16 0.09 0.02
Queue Length 95th (ft)14 0 1
Control Delay (s)10.0 0.0 1.7
Lane LOS A A
Approach Delay (s)10.0 0.0 1.7
Approach LOS A
Intersection Summary
Average Delay 3.7
Intersection Capacity Utilization 32.0%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
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I4CM Unsignalized Intersection Capacity Analysis Redfields 2019 Intersections
12: country green & olr 7/18/2011
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations 1 t
Volume (veh /h)164 55 37 180 290 174
Sign Control Stop Free Free
Grade 0%0% 0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)178 60 40 196 315 189
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 686 410 504
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 686 410 504
tC, single (s)6.4 6.2 4.1
tC, 2 stage (s)
tF (s)3.5 3.3 2.2
p0 queue free %55 91 96
cM capacity (veh /h)398 642 1060
Direction, Lane #EB 1 NB 1 NB 2 SB 1
Volume Total 238 40 196 504
Volume Left 178 40 0 0
Volume Right 60 0 0 189
cSH 440 1060 1700 1700
Volume to Capacity 0.54 0.04 0.12 0.30
Queue Length 95th (ft)79 3 0 0
Control Delay (s)22.4 8.5 0.0 0.0
Lane LOS C A
Approach Delay (s)22.4 1.5 0.0
Approach LOS C
Intersection Summary
Average Delay 5.8
Intersection Capacity Utilization 49.9%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
Page 4
HCM Unsignalized Intersection Capacity Analysis Redfields 2019 Intersections
15: Mountainwood & OLR 7/18/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations 4+4+r 4
Volume (veh /h)62 0 58 34 0 6 102 272 17 5 397 15
Sign Control Stop Stop Free Free
Grade 0%0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)67 0 63 37 0 7 111 296 18 5 432 16
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 974 986 440 1031 976 296 448 314
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 974 986 440 1031 976 296 448 314
tC, single (s)7.1 6.5 6.2 7.1 6.5 6.2 4.1 4.1
tC, 2 stage (s)
tF (s)3.5 4.0 3.3 3.5 4.0 3.3 2.2 2.2
p0 queue free %68 100 90 79 100 99 90 100
cM capacity (veh /h)211 222 617 175 225 744 1112 1246
Direction, Lane #EB 1 WB 1 NB 1 NB 2 NB 3 SB 1
Volume Total 130 43 111 296 18 453
Volume Left 67 37 111 0 0 5
Volume Right 63 7 0 0 18 16
cSH 309 197 1112 1700 1700 1246
Volume to Capacity 0.42 0.22 0.10 0.17 0.01 0.00
Queue Length 95th (ft)50 20 8 0 0 0
Control Delay (s)24.9 28.3 8.6 0.0 0.0 0.1
Lane LOS C D A A
Approach Delay (s)24.9 28.3 2.2 0.1
Approach LOS C D
Intersection Summary
Average Delay 5.2
Intersection Capacity Utilization 53.1%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
Page 5
ACM Unsignalized Intersecfon Capacity Analysis Redfields 2019 Intersections
19: Sunset & OLR /5th St Extd 7/18/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations 4+4+44+1 ft rf
Volume (veh /h)127 10 33 10 10 20 30 216 10 20 281 24
Sign Control Stop Stop Free Free
Grade 0%0%0%0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph)138 11 36 11 11 22 33 235 11 22 305 26
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type Raised Raised
Median storage veh)1 1
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 559 660 153 543 680 123 332 246
vC1, stage 1 conf vol 349 349 305 305
vC2, stage 2 conf vol 210 311 238 375
vCu, unblocked vol 559 660 153 543 680 123 332 246
tC, single (s)7.5 6.5 6.9 7.5 6.5 6.9 4.1 4.1
tC, 2 stage (s)6.5 5.5 6.5 5.5
tF (s)3.5 4.0 3.3 3.5 4.0 3.3 2.2 2.2
p0 queue free %71 98 96 98 98 98 97 98
cM capacity (veh /h)476 450 866 476 437 905 1225 1317
Direction, Lane #EB 1 WB 1 NB 1 NB 2 NB 3 SB 1 SB 2 SB 3 SB 4
Volume Total 185 43 33 157 89 22 153 153 26
Volume Left 138 11 33 0 0 22 0 0 0
Volume Right 36 22 0 0 11 0 0 0 26
cSH 519 607 1225 1700 1700 1317 1700 1700 1700
Volume to Capacity 0.36 0.07 0.03 0.09 0.05 0.02 0.09 0.09 0.02
Queue Length 95th (ft)40 6 2 0 0 1 0 0 0
Control Delay (s)15.7 11.4 8.0 0.0 0.0 7.8 0.0 0.0 0.0
Lane LOS C B A A
Approach Delay (s)15.7 11.4 0.9 0.5
Approach LOS C B
Intersection Summary
Average Delay 4.5
Intersection Capacity Utilization 37.3%ICU Level of Service A
Analysis Period (min)15
Redfields - 2019 Derived Volumes 7/18/2011 Build Synchro 7 - Light: Report
Page 6