Queueing Tech Memo-signedMemo
To: Stephanie Smith, PE Project Engineer From: Mark Powers, EIT
City of Chanhassen Stantec Consulting Services Inc.
File: 193803412 Date: February 25, 2016
Reference: Lake Lucy Road & Yosemite Avenue Housing Development Queueing Study
INTRODUCTION
A development consisting of 12 single family homes has been proposed to be built in the city of Chanhassen, MN near the intersection of Lake Lucy Road and Yosemite Avenue. Access to the
new development will be off of Yosemite Avenue. he proximity of the entrance for the new
development to the intersection at Lake Lucy Road and Yosemite Avenue, there is concern that vehicles may queue back to the intersection. Stantec has been asked to investigate the potential
for queueing of vehicles attempting to enter the new development on Yosemite Avenue.
METHODOLOGY
COUNTS
Stantec performed turning movement counts (TMC) at the intersection of Lake Lucy Road and Yosemite Avenue on the afternoon of Wednesday, February 25, 2016 from 4:00-6:00 PM. It was deemed that only PM peak counts would be required, as that is the time when the most vehicles
would attempt to turn into the development. The counts taken were seasonally adjusted according
to MnDOT standards.
TRIP GENERATION
Trip generation was performed using the ITE Trip Generation Manual 9th Edition. The results can be
seen in Table 1 below.
Table 1 - Trip Generation
Land Use Average
Weekday Total
AM Peak Hour PM Peak Hour
In Out Total In Out Total
New Development
12 Single Family Homes 149 4 14 18 10 6 16
Total 149 4 14 18 10 6 16
To simulate the maximum amount of strain on the system, and create the most potential for queues to develop, all vehicles entering the development were set to originate from Lake Lucy Road.
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February 25, 2016
Stephanie Smith, PE Project Engineer
Page 2 of 2
Reference: Lake Lucy Road & Yosemite Avenue Housing Development Queueing Study
FORECASTING
Analysis was performed for the year 2036. The MnDOT traffic projection factor for Carver County is
currently 1.4. This factor was applied uniformly to all TMC.
SIMULATION
The 2036 analysis was performed using the software Synchro/SimTraffic 9. The results of the
simulation from this software provide the projected queueing data required to determine if any
problems could potentially arise by the year 2036.
RESULTS
The results of the simulation showed no problems with queueing at the new intersection. The
maximum queue observed in five runs of simulation was 18’ in length or roughly two cars. The 95th percentile queue was 9’ or roughly one car. Even under conservative estimates of TMC, the
simulation shows that there should not be a sufficient amount of traffic to create queues reaching
back to the Lake Lucy Road and Yosemite Avenue intersection.
STANTEC CONSULTING SERVICES INC.
Mark Powers Transportation Engineer In Training Phone: (651) 967-4595
Fax: (651) 636-1311
Mark.Powers@stantec.com
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