TIA Summary
Transportation Planning & Engineering Consulting Services
11effron
t ran S 0 r tat I o. n Inc.
MEMORANDUM
Date
December 5,2000
To
Catherine Carlson, City of Yelm
From
Wally Trace, Trace and Associates
Tad S McBryan, P ~
Yelm Apartment Project in the Safeway Mixed-Use Development
Traffic Impact Analysis
CC
Subject:
This memorandum summarizes the transportation impact analysis for the proposed apartment project to be
located in the City ofYelm, Washington. The scope of work and study area for this analysis were developed
with assistance from City ofYelm staff. The analysis evaluates the project's impact to the adjacent off-site
roadways and intersection as well as site access. This memorandum is organized to include a project descrip-
tion, roadway network, trip generation, trip distribution and assignment, traffic volumes, level of service, inter-
nal circulation, and mitigation.
Project Description
Trace and Associates is proposing to construct a new apartment development located south ofYelm Avenue
and immediately east of Vancil Road. The site is located behind (immediately south of) the existing Safeway
supermarket. The project would include a total of 44 apartment units and 88 parking stalls. The project would
primarily be accessed from Vancil Road but would also have an internal connection to the Safeway parking area
along the east side of the supermarket building. The attached Figure 1 shows the proposed site plan. The
proposed apartment development is expected to be constructed and occupied by 2001
Roadway Network
The study area for this analysis was determined based on the proposed project's trip generation and trip distri-
butIOn pattern (presented later in this memorandum). The analysis determined that two roadways and one
intersection would be impacted by 20 or more PM peak hour trips. Therefore, this study focuses on Yelm
Avenue, Vancil Road and their signalized intersection.
Yelm Avenue is a two/three-lane arterial (also designated as SR-507) with sidewalks on both sides of the street.
Adjacent to the site, Yelm Avenue has three lanes (one in each direction, and a center, two-way turn lane) as
well as a bike lane on the north Side ofthe street. The posted speed limit is 35mph west of the site and reduces
to 30 mph east of the site.
4133 Interlake Avenue North, Seattle, WA 98103 Phone 206-547-7170 Fax 206-547-7744
Yelm Apartment Project in the Safeway MIxed-Use Development
Traffic Impact Analysis
December 5, 2000
Page 2 of 4
heffron
t ran S 0 r,t a t Ion Inc.
Vancil Road is a two-lane, north-south roadway providing access between residential areas and Yelm Avenue.
The Vancil RoadlYelm Avenue intersection is currently offset from the driveway serving the QFC retail center
on the north side ofYelm Avenue. All four legs of the intersection (including the offset QFC dnveway) are
controlled by one traffic signal, with crosswalks, pedestrian buttons and pedestnan sIgnals. The posted speed
limit on Vancil Road is 25 mph.
One key transportation improvement planned by the City of Yelm would directly affect the project study area and
access. The City ofYelm is working to realign the Vancil Road/Yelm Avenue intersection. This realignment would
create a four-leg, 90-degree intersection consisting of Vancil Road, the existing QFC access drive, and the two
approaches ofYelm Avenue. This realignment is planned to be complete in the near future, however, to provide for
a worst-case analysis, the future-with-proJect analysis do"es not include the realigned lane configuration.
Trip Generation
Trip generation for the proposed 44-unit apartment project was determined using data from two sources. As
required by the City ofYelm, PM peak hour trips were determined using rates presented in the City ofYelm's
Trip Generation Rate Default Values Daily trip generation estimates were developed using equations in Trip
Generation (Institute of Transportation Engineers, 6th Edition, 1997) since daily rates are not provided by the
City ofYelm. Trip generation estimates for the proposed apartment project are summarized in Table I
Table 1 Trip Generation Summary - Apartment Project in the Safeway Mixed-Use Development
PM Peak Hour Trips 2
Out Total
Project Proposal
Daily Trips 1
In
Trip Generation Rates
6.63 trips/unit
67%
33%
0.60 trips/unit
Trip Generation Estimate
290
17
9
26
Source: Heffron Transportation, Inc., 2000
1 Daily trip rates and PM peak hour in/out percentages obtained from Trip Generation (Institute of Transportation Engineers, 6th Edition, 1997)
2. PM Peak hour rate obtained from Trip Generation Rate Default Values (City of Ye/m's Concunency Management Ordinance (15.40))
Trip Distribution and Assignment
The trip distribution pattern for new project trips was based on the patterns developed for several recent project
in the City of Yelm as well as local traffic patterns near the site. An estimated 88% of inbound project trips
would be arriving from the west on Yelm Avenue; 12% of inbound trips would be arriving from the east on
Yelm A venue. Outbound trips would have a slightly different distribution pattern with 67% destined to the west
on Yelm Avenue, 22% destined the east on Yelm Avenue, and 11% destined to the retail center north ofYelm
A venue. Using these percentages, the project trips were assigned to the local roadway network. Figure 3 shows
the PM peak hour project trip assignment.
Yelm Apartment Project in the Safeway Mixed-Use Development
Traffic Impact Analysis
December 5, 2000
Page 3 of 4
heffron
t ran S 0 r tat Ion. Inc.
Traffic Volumes
The City ofYelm reqUires that project impacts be evaluated during weekday PM peak hour conditions. This IS
because the PM peak hour IS the tIme when traffic volumes on vicinity streets are highest, congestion IS most
noticeable, and the proposed project would generate the largest number of driveway trips. A PM peak hour
turning movement count was performed at the Yelm Avenue/Vancil Road intersection in January 2000 Figure
2 shows the existing PM peak hour traffic volumes at the study area intersection.
The proposed apartment project is expected to be built and occupied by 2001 To determine the traffic
condItIOns that would exist in the future without the proposed project, existing traffic volumes were increased
using a 2% annual growth rate. This growth rate was provided by CIty ofYelm transportation review staff
PIpeline-project traffic growth was also added to year 200 1-without-project traffic forecasts. Traffic volumes
generated by the planned retail development on the Safeway site, Phase I of the Prairie Park development (the
proposed cinema), and the proposed Safeway gas station were added to the future traffic volumes. Project trip
assignments from the impact analyses prepared for each of these projects were used to assign pipeline
development traffic to the study area roadways and intersections (Traffic Impact Analysis Safeway Store and
Retail Center, Heffron Transportation, May 6, 1998, Traffic Impact Analysis Prairie Park, Heffron
Transportation, Inc., February 11,2000; Safeway Gas Station - City ofYelm Traffic Impact Analysis, Heffron
Transportation, Inc., February 29,2000). Figure 2 shows the forecast year 2001 without-project traffic volume.
As mentioned in the previous section, the proposed apartment project is expected to generate 26 new PM peak
hour trips. The project trips were added to the year 200 l-without-project traffic volumes to represent 2001-with-
project traffic volumes. The 2001-with-project traffic volumes are shown on Figure 3
level of Service
Level of service (LOS) is a qualitative measure used to characterize traffic operating conditions. Six letter
designations, "A" through "F," are used to defme the level of service. LOS A is the best and represents good
traffic operations with little or no delay to motorists. LOS F is the worst and indicates poor traffic operations
with long delays. LOS F is acceptable to the City ofYelm and represents intersections and roadways that are
above theoretical capacity The threshold between LOS E and LOS F is generally considered to be an
intersection's capacity
Level of service is defmed in terms of delay For signalized intersections, delay is dependent on a number of
variables, including the traffic volumes for each turning movement, number of lanes on each approach, and
signal cycle length and phasing. For unsignalized intersections, delay is based on the number of gaps in the
major street traffic through which a vehicle entering or leaving the side street can pass.
Levels of service for the Ye1m AvenueNancil Road intersection were determined using procedures in the
Highway Capacity Manual. Table 3 summarizes the existing, 2002-without-project, and 2002-with-project levels
of service. As mentioned previously, the future analysis for the Yelm A venueN ancil Road intersection does not
assume the proposed realignment by the City ofYelm. Table 3 shows that all intersections would operate at LOS
C or better in the future with the project.
Level of service was also calculated for the site access driveway onto Vancil Road. Based on this analysis, the
driveway is expected to operate at LOS A during the PM peak hour Therefore, no off-site or site-access
improvements would be required to accommodate the proposed apartment project.
Yelm Apartment Project in the Safeway Mixed-Use Development
Traffic Impact Analysis
December 5, 2000
Page 4 of 4
heffron
t ran S 0 r tat Ion Inc.
Table 2. Level of Service Summary - Existing, 2001-Without-Project, and 2001-With-Project Conditions
Existing
2001-Without-Project
2001-With-Project
LOS Delay v/c
C 277 0 68
Signalized Intersection
Yelm Avenue/Vancil Road
LOS 1 Delay 2 v/c 3 LOS Delay V/c
C 24 4 0 62 C 26 8 0 66
Source: Heffron Transportation, Inc., 2000.
1 Level of service
2. Average seconds of delay per vehicle.
3. Volume-to-capacity ratio.
Internal Circulation
The proposed apartment project will be located immediately south of the existing Safeway supermarket. An
access connection to the Safeway parking lot is proposed as part of the site plan. This would allow project
traffic as well as emergency vehicles an alternative route to the site in the event that the main access to Vancil
Road is blocked. The internal site roadways and parking lot layout would adequately serve the anticipated
vehicular demand. In addition, pedestrian connections between the apartment project and the Safeway
supermarket site would be constructed. These walkways would encourage non-automobile trips between the
uses and would enhance the mobility options for residents of the apartment project as well as customers of the
Safeway supermarket.
Parking Demand and Supply
The project proposes to construct 88 parking space. Based on rates provided in Parking Generation (Institute of
Transportation Engineers, 2nd Edition, 1987), this parking supply would adequately accommodate the
anticipated demand.
Mitigation
The proposed project would not degrade the overall level of service at the Yelm AvenueNancil Road intersec-
tion or the site access driveways. Therefore, no specific transportation improvements would be required to
mitigate the impact of the proposed project. However, the City ofYelm has established a "'transportation
facilities charge' as a condition of development approval to pay for public facilities needed to serve new growth
and development. "The current adopted fee is $750 per new PM peak hour trip. The trip generation section of
this report determined that the proposed apartment project would generate 26 new trips to the site during the PM
peak hour, relating to a total transportation facilities charge of $19,500 No other transportation mitigation or
fees would be required to accommodate the proposed apartment project.
TSM/tsm
Attachments.
Figure I Proposed Site Plan
Figure 2. Existing and Forecast 2001 Without Project PM Peak Hour Traffic Volumes
Figure 3 PM Peak Hour Project Traffic Assignment and Forecast 2001 With-Project PM
Peak Hour Traffic Volumes
Trace Apartment T1A Memo - Final.doc
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Proposed Site Plan
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Yelm Apartment Project in the
Safeway Mixed-Use Development
transportation, inc.
Existing (2000) PM Peak Hour Traffic Volume
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112
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Yelm Apartment Project in the Figure 2 heffron
Safeway Mixed-Use Development Existing and Forecast-2001-Without-
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Safeway Mixed-Use Development
Figure 3
PM Peak Hour Project Trip
Assignment & Forecast-2001-With-
Project PM Peak HourTraffic Volumes
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206 547 7744
P.Ol
Nov-22-00 01:55P Heffron Transportat;on
Trace Apartments - Yelm
Y~lm Avenue/Vancil Road
Existing PM Peak Hour
11/22/00
14:37:55
SIGNAL97/TEAPAC[Ver 1.00] - Capacity Analysis S~
Intersection Averages:
Deqree of Saturation (v/e) 0 62 Vehicle Delay 24.4 Level of Service C+
Sq 74
**/**
Phase 1
Phase 2
Phase 3
Phase ..
.
/1\
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I <'* '* *>1 1****> I
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I * .. * 1 1 v 1
G/C-0.127
G= 11.4"
Y+R- 4.0"
OFF=- 0.0%
G/C=O.120
(;=:! 10.8"
Y+R= 4.0"
OFF=17.1'
G/C~0.098
G= 7.9"
Y+~ 4.0"
OJT;o;33.6'
ale-a. 488
G= 43.9"
Y+R;:g; 4.0"
OFF=46.8%
c= 90 .ee
G- 74.0 see = 82.2% Y=16.0 see = 17.8' Ped= 0.0 see = 0.0%
I Lane IWidthl I g/C I Service Rata I Adj 1
Group I Lanes I Reqd Used I ec (vph) 9E I Volume I
SB Approach
~ ----4 = __z-~.:.....:. ...b.....
~P'
I RT
ILT+'l'H
I 12/1 10.140 10.121
1 12/1 10.163 10.127
NBApproach
...
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...._.-,..d:o..
ILT+TH+RTI 12/1 10.160 10.120
WB Approach
J Lh..
RT
TH
LT
1 12/1 10.138 10.489
I 12/1 10.360 10.488
I 12/1 10.123 10.098
EB Approach
-'====-=
TH+RTI 12/1 10.412 10.488 I
LT I 12/1 10.146 10.098 1
I HeM I L 190% Maxi
v/e I Delay I S I Queue I
38.g D+
;r
==-==~ I
-----
22
26
181 I
214 I
36.2 I 0+1 59 ftl
40.0 1*0+1 141 ftl
53 10.261 I
128 10.SSg I
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174
40.3 1*0+1 115 ftl
103 10.539
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676
806
1
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882
133
12.2 1 8+1 31 ftl
18.1 I B I 356 ~tl
38 0 I 0+1 25 ftl
47 10.063
540 10.612
13 10.086
23.8
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===-...:.=
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811 I 887 I
1 1 136 I
651. 10.734
78 10.506
21.6 I.e.! 424 ~tl
41.9 1*0+1 91 ftl
Nov-22-00 01:56P Heffron Transportat;on
206 547 7744
P.02
Trace Apartments - Yel.m
Yelm Av.nue/Vancil Road
Existinq PM Peak Hour
11/22/00
14.38:21
SIGNAL97/TEAPAC[Ver 1.00] - SUDmJary o~ Parameter values
Intereection Parameters
METROAREA
SIMULATION PERIOD
LEVELOFSERVICB
HODELOCATION
HONCHO
15
C S
o 0
Approach Paramatars
APPLABELS sa WB NB EB
GRADES 0.0 0.0 0.0 0.0
PEDLEVELS 0 0 0 0
PARKINGSIDES NONE NONE NONE NONE
PARKVOLOMES 20 20 20 20
BUSVOLtJM!S 0 0 0 0
IUGHTTUm{ONREDS 0 0 0 0
Movement ParalMtera
MOVLABELS RT TH LT RT TB loT RT TH LT RT TH loT
VOLCMES 51 17 107 46 524 13 12 21 67 60 571 76
WIDTHS 12.0 12.0 0.0 12.0 12.0 12.0 0.0 12.0 o 0 0.0 12.0 12.0
LANES 1 1 0 1 1 1 0 1 0 0 1 1
UTILIZATIONS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
'I'RUCltPERCEHTS 1.0 1.0 1.0 5.0 5.0 5.0 2.0 2.0 2.0 3.0 3.0 3.0
PEAKHOURFACTORS 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97
ARRIVALTYPES 3 3 3 3 3 3 3 3 3 :3 3 3
ACTOA'UONS YES YES YES YES YES YES YES YES YES YES YES YES
REQCLEARANCES 4.0 4.0 4.0 4.0 4 0 4.0 4.0 4.0 4.0 4.0 4.0 4.0
MtNIMmfS 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0
IDEALSATFLOWS 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900
FACTORS 1. 00 1. 00 1.00 1.. 00 1. 00 1. 00 1.00 1.. 00 1.00 1.00 1.00 1.00
DELAYFACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
NSTOPFACTORS 1.00 1.00 1..00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
GROOPTYPES NORM NORM NORM HORM HORM NORM NORM NORM NORM NORM NORM NORM
SATURATIONFLOWS 1599 1804 0 1538 1810 1119 o 1594 0 o 1818 1752
Phasing Parameters
SEQUENCES 74
PERMISSIVES HO NO NO NO LEADLAGS NONE NONE
OVERLAPS HO HO NO NO OFFSET 0.00 1
cYCLES 90 90 30 PEDTDG: 0.0 0
GlU1:EN'1'IKES 11.43 10.78 7.90 43.89
YELLOWTlMES 4.00 4.00 4.00 4.00
CRITICALS 2 8 12 11
UCESS 0
206 547 7744
P.03
"Nov-22-00 Ol:56P Heffron Transportat;on
Trace Apartments- Yelm
Yelm Avenu./Vaneil Road
2001-Without-Project PH Peak Hour
11/22/00
14:56:30
SIGN~g7/TEAPAC[Ver 1.00] - Capaoity Analysis Summary
Inter.eetion Averages:
Degree of Saturation (vIe) 0.66 Vehicle Delay 26.8 Level of Service C+
Sq 74 Phase 1 Phase 2 Phase 3 Phase 4
**/*. -------------------------------------------------
I + * * I I ^ I
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11\ 1<+ * *> / I <++++1
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North I <* * *>1 1****> I
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--------------~--------------------~-------------
G/C-0.121
G- 10.9"
Y+R!Z 4.0"
OFF- 0.0'
G/e=0.1.38
G= 12.4"
Y+R;g 4.011
OFF=16.5%
G/C-0.080
Go= 7.2"
Y+R"" 4.0"
OFFo=34.9'
G/C=O.493
G= 43.5"
Y+R= 4.0"
OFF=47.3%
c- gO Seo G= 74.0 sae ~ 82.2% Y""16.0 see = 17.8% Pad- 0.0 see = 0.0%
---~-----------------------------------------------------------------------~---
I Lane IWidth/1 glC 1 Service Rate I Adj I
Qroup I Lanes I Reqd used I @C (~h) 8E I Volume I
/ ReM 'L 190' Maxi
v/e I Delay I S I Queue I
---------~------,-----------------~~~----------------------~--------------------
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--'
-q:7,"~~
1 RT
ILT+TR
I 12/1 10.141. 10.121 I
I 12/1 10.165 10.121 1
41.0
D+
---=-= .:..~
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---==.:::= =~.Y...~~__
7 I 176 I
9 1 202 I
57 10.295
134 10.615
36.9 I D+I 63 ftl
42.7 1*0+1 148 ~tl
--------------------~-----------------------------------------~-~--------------
NB Approach
L mil -=-: =Ia..
ILT+TH+RTI 12/1 10.174 10.138 I
WB Approach
=
.!tL .<:b......d..
RT
TH
LT
I 12/1 10.140 10.483
1 12/1 10.368 10.483
1 12/1 10.124 10.080
EB Approach
=-=--
TH+RTI 12/1 10.439 10.483 I
LT I 12/1 10.146 10.080 I
41. 8 0+
:::::-:
=
---
== =-~
....--
50
206 I 137 10.620
41.8 1*0+1 149 ftl
18.9 B
-::-
668
796
1
743
874
119
52 10.070
556 10.636
15 10.109
B+I 35 ftl
B I 370 ftl
0+1 2S f'tl
12.5
18.9
38.8
27.1
C+
::.::::::::
==--~
==-=
791 I 869 I
1 I 121 I
699 10.804
77 10.550
25.2 l*e+1 460 ftl
44.4 1*0+1 90 rtl
-------~-----------------------~--~-------------------------~------------------
206 547 7744
P.04
Nov-22-00 01:56P Heffron Transportation
Trace Apartments- Yelm
Yelm Avanue/Vancil Road
2001-W1thout-~roject PM Peak Hour
~1/22/00
14:56:44
SIGNAL97/TEAPAC[Var 1.00] - Summary of Parameter Value.
Intersection Parameters
METROAREA
sI:HOLATlON ~EJUOD
LEVELOFSERVICE
NODIi:LOCATION
Approach Par...,ters
APPLABELS
GRADES
PEDLEVELS
PARlUNGSIOES
FNUWOLUMES
BUSVOLUMES
RIGHTTURNONREDS
Movemant Par~t&rs
NONCBD
15
c S
o 0
sa
0.0
o
NONE
20
o
o
WB
0.0
o
NONE
20
o
o
1m
0.0
o
Nom:
20
o
o
NB
0.0
o
NONE
20
o
o
MOvt..ABELS RT TH LT RT TH LT RT TH LT RT TB LT
VOLUMi:S 55 20 110 50 539 15 10 20 ~03 111 567 75
WIDTHS ~2.0 12.0 0.0 12.0 12.0 12.0 0.0 12.0 0.0 o 0 12.0 12.0
LANES 1 1 0 1 1 1 0 1 0 0 1 1
UTILIZATIONS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
TRUClCPERCENTS 1.0 1.0 1.0 5.0 5.0 5.0 2.0 2.0 2.0 3.0 3 0 3.0
::?VJIOlOURFACTORS 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97
ARRIVALTYPES 3 3 3 3 3 3 3 3 3 3 3 3
ACTUATIONS YES YES YES YES ns YES YiS YES YES YES n:S YES
REQCLEARANCR8 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0
Hl:NlMOHS 5.0 5.0 5.0 s.o 5.0 5.0 S.O 5.0 5 0 5.0 5.0 5.0
IDEALSATFLOWS 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900
FACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
DELAYFACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
NSTOPFACTORS 1. 00 1. 00 1. 00 1. 00 1. 00 1. 00 1.00 1.00 1.00 1.00 1.00 1.00
GROUPTYPES NORM NORM NORM NORM NORM NORN NORM HORM NORM NORM NORM NORM
SA'l'CRATIONFLOHS 1599 1805 0 1.538 1810 1719 o 1596 0 o 1800 1752
Ph.einq Parameter.
SEQUENCES 74
l'ERMISSIVES NO NO NO NO LEADLAGS NONE NONE
OVERLAPS NO NO NO NO OF1!'SiT 0.00 1
CYCLII:S 90 90 30 PEDTIHI!: 0.0 0
GRBENTIMES 10.88 12.44 7.21 43.46
YELLOWI'INIJ:S 4.00 4.00 c.oo 4.00
CRITlCALS 2 9 12 11
EXCESS 0
~ov-22-00 01:56P Heffron Transportat;on
206 547 7744
P.05
Trace Apartments- Yea
Yalm Avenue/vancil Road
2001-With-Project PM Peak Hour
11/22/00
14:54:44
SIGNAL97/TEAPAC[Ver 1.00] - Capacity Analysis Summary
Intersaotion Averages:
Degree o~ Saturation (vIe) 0 68 Vehicle Delay 27.7
Level of Service C
3<;[ 74
**1**
Phase 1
Pha.. 2
Phase 3
Phase 4
11\
I
I
North
I
I + * * I 1 A ,
I + * * I I ++++1
1<+ * *> I I <++++,
I v I A ++++1 I
I A 1**** v I I
I <* * *>1 1****> I
I . * .. I 1***. ,
I * * * I I v I
G/C=0.118
G- 10.6"
Y+R= 4 0"
OFF- 0.0'
G/c.-O.143
G= 12.9"
Y+Ro- 4.0"
OFF=16.3t
G/C-.....(J.079
G- 7.1"
Y+R= 4.0"
O.FF-35.0'
0/C-0.493
G= 43.5"
Y+R- 4.0"
OFF=47.3%
C... ~O see
G= 74.0 see - 92.2% Y=16.0 sec - 17.8' Pad= 0 0 see ~ 0 0%
I Lane I Width I I g/C 1 ServiOlll Rata I Adj I
Group I Lanes I Reqd Used I @C (vph) @E 1 VolU1Dfi1lI
I HeM 1 L 190% Maxi
vie 1 Delay I S 1 Queue I
SB Approach
41. 7
0+
--":'--=:="::1,.
Jl==-=-
..
=-
~"'===:
I RT
iLT+T}I
I 12/1 /0.141 /0.118 I
I 12/1 /0.165 /0.118 I
1 1 172 I 57 10.302
1 I 1Q7 I 134 10.62~
37.2 I 0+1 63 ftl
43.6 1*0+1 149 ftl
NB Approach
42.3 0+
=m
::..:==:--::-
- --
I LT+TH+RT 1 12/1 /0.179 /0.143 I
61 I 214 I 146 10.640
42.3 /*0+1 158 ftl
WB Approach 19.0 S
== -:-=--== LiLt == =.:..:- -
R'l' 1 12/1 /0.140 10.483 667 1 743 52 10.070 12.5 B1'1 35 ftl
TH 1 12/1 10.368 10.483 7~6 1 874 556 10.636 18.9 B I 370 ftl
LT I 12/1 10.125 10.078 1 I 116 18 10.133 39.1 0+1 25 rtl
E8 Approach
28.4
c
:- ::..:
~
=-
==
TH+RTI 12/1 10.447 10.483 1
LT I 12/1 /0.146 10.078 1
788 I
1 I
866
118
715 10.826 I
77 10.562 1
26.6 l*e+1 471 ftl
45.2 1*0 I 90 ftl
~-------------------------------------------~~---------------------------------
Nov-22-00 01:56P Heffron Transportat;on
206 547 7744
P.06
Trace Apartm8nt8- Ye1m
Yelm Avenue/Vancil Road
2001-With-Project PH Peak Hour
11/22/00
14:54'59
SlGNAL97/TEAPAC[Ver 1.00] - 8uamary of ParatDl1lter Values
Inter..ction Parameters
METROAR&A
SIMULATION PERIOD
LEVELOFSERVICE
NOOELOCATION
Approach Parameter.
APPLABELS
GRADES
PBDLEVELS
PARKINGSIDES
PAlUWOLUMES
BUSVOLOMES
RIGHT'l'URNQNRg))S
MovamAnt Parameters
NONCBD
15
C S
o 0
SB
0.0
o
NONE
20
o
o
WB
0.0
o
NONE
20
o
o
NB
o 0
o
NONE
20
o
o
ED
0.0
o
NONE
20
o
o
MOVLAaJtLS RT TH LT RT TH L'l' RT TH L'l' "RT TH LT
VOLCMES 55 20 110 50 539 17 12 21 109 126 567 75
Wl:DTHS 12.0 12.0 0.0 12.0 12.0 12.0 0.0 12.0 0.0 0.0 12.0 12.0
I.J\NES 1 1 0 1 1 1 0 1 0 0 1 1
UTILIZATIONS 0.00 0.00 0.00 0.00 0.00 0_00 0.00 0.00 0.00 0.00 0.00 0.00
TRUCKPERCENTS 1.0 1.0 1.0 5.0 5.0 5.0 2.0 2.0 2.0 3.0 3 0 3.0
PEAKHOURFACTORS o 97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 o . sn 0.97
ARRIVALTYPES 3 3 3 3 3 3 3 3 3 3 3 3
ACTUATIONS YES YES YES YES YES YES YES YES YES YES YES ns
REQCLEARANCES 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0
MINIMUMS 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0
IDEALSATFLOWS 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900
FACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
DELAY FACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1. 00 1. 00 1. 00 1.00 1.00 1.00
NSTOPFACTORS 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1 .00 1.00 1. 00
GROUPTTPES NORM NORM NORM NORM NORM NORM NORM NORM NORM NORM NORM NORM
SA'1'URAT.IONFLOWS 1599 1805 0 1538 1810 1719 o 1595 0 o 1794 1752
Phasing Parameters
SEQUENCES 74
ii?ERMISSYVES NO NO NO NO LEADLAGS NONE NONE
OWRLAPS NO NO NO NO OFFSET 0.00 1
CYCLES 90 90 30 PEDTtN!: 0.0 0
GRBENTIMES 10.64 12.85 7.05 43.45
ULLOWTINES 4.00 4.00 4.00 4.00
CRITICALS 2 8 12 11
EXCESS 0
HCS Unsignalized Intersections Release 3 2
TWO-WAY STOP CONTROL SUMMARY
Intersection Vancil Road/Site Access
Analyst Heffron Transportation, Inc
Project No Trace Apartments - Yelm
Date 11/22/00
East/West Street Site Access
North/South Street Vancil Road
Intersection Orientation NS Study period (hrs)
o 25
Major Street
Vehicle
Approach
Movement 1
L
Volumes and Adjustments
Northbound
2 3
T R
Volume
Hourly Flow Rate, HFR
Percent Heavy Vehicles
Median Type Undivided
FT -::-hannelized?
133 1
147 1
Southbound
4 5 6
L T R
17 146
18 162
2
0 1
LT
No
Eastbound
10 11 12
L T R
L 3.r~es
1 0
TR
.::-:-- :igJration
Upstream Signal?
No
Minor Street
Approach
Movement
Westbound
789
L T R
Volume
Hourly Flow Rate, HFR
Percent Heavy Vehicles
Percent Grade (%)
Median Storage
:?.:.- :=:-sd Approach
o
o
o
9
10
o
o
o
RT Channelized?
Lanes
Configuration
1
Exists?
Storage
No
o
o
LR
Delay,
NB
1
Queue
SB
4
LT
Length, and Level of
Westbound
789
LR
Service
Eastbound
10 11
Approach
Movement
Lane Config
12
" l "ph J
C (m) (vph)
v/c
95% queue length
Control Delay
LOS
Approach Delay
Approach LOS
18
1434
o 01
o 00
7 5
A
10
904
o 01
o 00
9 0
A
9 0
A
HCS Unsignalized Intersections Release 3 2