Traffic..-
rw
.~
.~
.~
.~
..
..
.~,
.~
.~
..
,,.o
.~
Terra Valley Residential Development
Yelm, Washington
Addendum to Tahoma Terra Residential Development
Transportation Impact Study (dated February 25, 2005)
August 25, 2005
Prepared for:
SCA Consulting Group
4200 Sixth Ave SE, Suite 301
Lacey, WA 98503
SEP 2 1 rl;,
.~.
Prepared by:
Transportation Engineering Northwest
Transportation Engineering/Operations • Impact Studies • Design Services • Transportation Planning/Forecasting
16625 Redmond Way, Suite M, PMB 323 • Redmond, WA 98052 • Office/Mobile (206) 396-8286 • Fax (425) 398-5779
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Table of Contents
FINDINGS &CONCLUSIONS ..........................................................................................................1
INTRODUCTION ..............................................................................................................................2
Project Description ..................................................................................................................... .2
Traffic Study Approach ................................................................................................................ 2
Primary Data and Information Sources .......................................................................................2
Trip Generation ...........................................................................................................................5
Trip Distribution and Assignment .................................................................................................5
Traffic Volume Impact .................................................................................................................6
Roadway Improvement Assumptions ........................................................................................ ..6
Intersection LOS Analysis ......................................................................................................... 10
Site Access Analysis ................................................................................................................. 11
Non-Motorized Impacts ............................................................................................................. 11
Road Improvements .................................................................................................................. 12
MITIGATION MEASURES ............................................................................................................. 13
Traffic Impact Fee ..................................................................................................................... 13
Non-Motorized Improvements ................................................................................................... 13
Longmire Street SE Improvements ........................................................................................... 13
Appendix A -Intersection LOS Analysis Results
Appendix B -Neighborhood Collector Standards
Transportation Engineering Northwest j August 25, 2005
Terra Valley Residential Development - Yelm, WA Transportation Impact Study Addendum
List of Figures and Tables
Figure 1. Project Vicinity ..............................................................................................................................3
Figure 2. Project Site Plan ...........................................................................................................................4
Figure 3. PM Peak Hour Trip Distribution and Assignment .......................................................................... 7
Figure 4. 2006 Without Project PM Peak Hour Traffic Volumes ........................................................:......... 8
Figure 5. 2006 With Project PM Peak Hour Traffic Volumes .......................................................................9
Table 1. Terra Valley Residential Development Project Trip Generation ...................................................5
Table 2. Terra Valley Residential Development 2006 PM Peak Hour LOS Summary ...............................10
Table 3. Road Improvements for the Terra Valley Residential Development ............................................12
Transportation Engineering Northwest jj August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
FINDINGS 8z CONCLUSIONS
Project Proposal. The proposed Terra Valley residential development would consist of
up to 40 single-family residential homes located on the south side of Longmire Street SE.
Access to the proposed site would be provided via two access driveways onto Longmire
Street SE. Full build-out of the project development is anticipated for occupancy in 2006.
Trip Generation. The proposed development is anticipated to generate a total of about
380 weekday daily trips, with 30 occurring during the AM peak hour and 40 during the
PM peak hour.
Study Area Intersection Operations. The City of Yelm has indicated the intersection of
1St Street SE/Yelm Avenue currently operates at LOS F during the PM peak hour due
primarily to interference of multiple side-street intersections and driveways along Yehn
Avenue. The traffic analysis using traditional traffic model software indicates that this
intersection would operate at LOS E during the PM peak hour with or without the project.
With the center turn lane being constructed by the Tahoma Terra development at the
unsignalized intersection of Longmire Street / Yelm Avenue, the side-street turns from
Longmire Street onto Yelm Avenue are expected to operate at LOS E with or without the
project. Westbound side street turns from Mosman Avenue onto 1St Avenue are expected
to operate at LOS D with or without the project.
Site Access Impacts. The internal site roadway would provide adequate on-site, two-
way circulation and fire and emergency vehicle access with two driveway entrances onto
Longmire Street SE.
Mitigation. The following is identified to mitigate the traffic impacts of the proposed
development.
1. Traffic Impact Fee. The Terra Valley residential development would be subject
to a $30,000 traffic impact fee ($750 per PM peak hour trip X 40 trips), which is
based on 40 residential lots.
2. Non-Motorized Improvements. Standard frontage improvements, including
curb/gutter/sidewalk would be provided on all internal roads with half-street curbs
and sidewalks on all property frontages of Longmire Street SE.
3. Roadway Widening. Widen Longmire Street SE to a modified Neighborhood
Collector road west of Yelm Ave based on the established road section agreement
with the City as part of the Tahoma Terra project for the limited 50-foot right-of-
way. This modified collector would provide a 5-foot sidewalk and 7-foot planter
strip on one side, two 16-foot travel lanes, curb and gutter on both sides, and a 6-
foot planter on one side. Future development on the other side of the street would
contribute additional right-of--way and construct the sidewalk.
Transportation Engineering Northwest ] August 25, 2005
Terra Valley Residential Development - Yelm, WA
INTRODUCTION
Transportation Impact Study Addendum
This traffic impact analysis has been prepared for the proposed Terra Valley
residential development. This analysis serve as an Addendum to the Tahoma
Terra Residential Development Final Transportation Impact Study, dated February
25, 2005.
Project Description
Development. The proposed Terra Valley residential development would consist
of up to 40 single-family residential homes.
Location. The proposed Terra Valley residential development is located west of
Yelm Avenue (SR-510) in the Yelm urban growth area at the west end of
Longmire Street SE. See Figure 1 Vicinity Map.
Access. Primary vehicular access would occur via two driveways onto Longmire
Street SE.
Traffic Study Approach
The report documents the evaluation of traffic impacts and recommended
mitigation measures for the proposed project. To evaluate the traffic impacts of
the Terra Valley residential development, the following tasks were undertaken:
• Documented future without-project traffic forecasts and assumptions;
• Estimated trip generation and documented distribution of project traffic;
• Evaluated intersection LOS at three study intersections for weekday PM
peak hour conditions;
• Determined City transportation mitigation measures and fees.
Primary Data and Information Sources
• Tahoma Terra Residential Development Final Transportation Impact Study,
February 25, 2005.
• Highway Capacity Manual (HC11~, Special Report 209, Transportation
Research Board (TRB), Year 2000 Edition.
• City of Yelm Development Guidelines -July 19, 2000.
• Institute of Transportation Engineers (ITE) Trip Generation Manual, 7~'
Edition, 2004.
• City of Yehn Municipal Code 15.40 - Concurrency Management.
Transportation Engineering Northwest 2 August 25, 2005
Ten-a Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Figure 1.
Project Vicinity
SE Berry VaIIE
w!
~:
c'
~;
L
Li
Project
Site
P,
eS
~$
Not to Scale
t~ Transportation
Engineering
Northwest, LLC
~ 507
~'
~'
ac
~:
Figure 1
Project Site Vicinity
Terra Valley
Yeim, Washington
Transportation Impact Study
Addendum
~rransportation Engineering Northwest 3 August 25, 2005
a
510 c-
x'
Terra Valley Residential Development - Yelm, WA Transportation Impact Study Addendum
Figure 2.
Project Site Plan
Not to Scale Source: SCA Consulting Group, Inc., August 5, 21)05
Transportation Terra Valley
`~ Engineering Figure 2 Yelm, Washington
Northwest, LLC Project Slte Plan
Transportation Impact Sady
Addendum
Transportation Engineering Northwest 4 August 25, 2005
Terra Valley Residential Development - Yelm, WA
TRAFFIC IMPACT ANALYSIS
Traruportation Impact Study Addendum
This section of the report provides a detailed traffic analysis of the Terra Valley
development, and how it relates to the Tahoma Terra Phases 1 and 2 development.
This analysis is intended to satisfy the City's traffic study requirements under
SEPA.
Trip Generation
The project trip generation was calculated based on the Institute of Transportation
Engineers (ITE) Trip Generation Manual, 7~' edition. ITE Land Use No. 210
(Single-Family Residential) was used for the proposed 40 lots. The weekday
daily, AM, and PM peak hour trip generation rates were used to calculate the trip
generation, as shown in Table 1, per City of Yelm staff.
For purposes of comparison, the table also shows the adopted trip generation for
Tahoma Terra Phases 1 and 2.
Table 1.
Terra Valley Residential Development
Project Trip Generation
AM Peak Hour PM Peak Hour Daily
Land Use' Size2 Rate3 Total In Out Rate3 Total In Out Rate3 Trips
Single-Family Detached Housing 40 0.75 30 7 23 1.01 40 25 15 9.57 380
Tahoma Terra Phases 1 and 24 - - 374 179 195 -- 512 244 268 -- 5,120
1. Single-Family Detached Housing =ITE LUC 210.
2. Single-Family Detached Housing =Size based on Dwelling Units.
3. Trip rates based on ITE Trip Generation Manual, 7~' Edition, 2003.
4. Based on tri eneration estimates in the Tahoma Terra Residential Develo ment Final Trans nation Im act Stud , Febru 25, 2005.
According to the ITE data, and as shown above, the project is expected to generate
about 380 weekday daily trips, with 30 occurring during the AM peak hour and 40
during the PM peak hour. The Tahoma Terra Phases 1 and 2 development is
estimated to generate about 5,120 weekday daily trips, with 374 occurring during
the AM peak hour and 512 during the PM peak hour.
Trip Distribution and Assignment
The distribution of PM peak hour project-generated traffic for Terra Valley was
based on information provided by the CiTy's traffic consultant - Parametrix, and
existing travel patterns in the area. The distribution is consistent with the
distribution for the Tahoma Terra Phases 1 and 2 development.
Transportation Engineering Northwest 5 August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
In general, the following distribution was used in the traffic analyses:
• 30 % Northwest on Yelm Avenue (SR-510)
• 15% Southwest on 1St Street (SR-507)
• 15% Northeast on lst Street (10%) and 3rd Street (5%)
• 30% Southeast on Yelm Avenue (SR-507)
• 10% Local with 5% each on 2nd Street and Edwards Street
The distribution and assignment of PM peak hour project-generated trips for the
project is also shown in Figure 3.
Traffic Volume Impact
Future traffic volumes with and without the development were estimated for PM
peak hour conditions in the year 2006. Future traffic volumes at the study
intersections were developed based on existing peak hour traffic counts (obtained
from the Tahoma Terra Residential Development Final Traffic Impact Study,
February 25, 2005) increased to account for background growth. A 4 percent
annual growth rate was used to account for traffic growth in the area. In addition
to the background growth rate, pipeline projects for Yelm Terra Plat (97 single-
family residential homes), Tahoma Terra Phase 1 (89 single-family residential
homes), and Tahoma Terra Phase 2 (97 single-family residential homes, 20
condominiums/townhouses, 8 fuel position gas station with car wash, and 48,000
square feet of medical-dental office building) were added to existing conditions to
determine 2006 PM peak hour traffic volumes without the project.
The weekday PM peak hour traffic volumes for year 2006 without the project are
shown on Figure 4. Adding the PM peak hour project trips for the project (shown
in Figure 3) to the future without-project traffic volumes (Figure 4), results in
future traffic volumes with the project, as shown in Figure 5.
Roadway Improvement Assumptions
As part of the development of Tahoma Terra Phase 1 and 2, the following
transportation improvements have been assumed:
• Construction of a center left-turn lane on Yelm Avenue at the Longmire
Street SE intersection.
• Longmire Street SE improvements would provide an additional 16-feet of
pavement widening with a 34-foot paved section, which would
accommodate two 14-foot travel lanes, and a 6-foot paved non-motorized
path on one side.
Transportation Engineering Northwest ( August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Figure 3.
PM Peak Hour Trip Distribution and Assignment
--~ ~'
_~d,
~ ~`P
''~F
t 507., c~'t i
-,- ~~a ~ "
eS~ ~ '
1S~P~ ~,
,o
~ _
Legend
roc PM Volumes
Trip Dfstribudon
Not to Scale
i~~~~ Fi ure 3 Terra Valley
J Transportation g .
Engineering PM Peak Hour Project Trip Yelm, Washington
Northwest, LLC Distribution and Assignment
Transportation I~act Study
Addendum
Transportation Engineering Northwest ~ August 25, 2005
Terra Valley Residential Development - Yelm, WA Transportation Im
pact Study Addendum
Figure 4.
2006 Without Project PM Peak Hour Traffic Volumes
;,~51
..
0
c
0
Y
Longmire St SW/Yelm Ave
~~
~~
~~,` ~~'o
.os2~~ h~ 6e~
l 1 Rs
1~5~ qn~ o~I~ ~'eg~q~
~~ \a
L
`~~5 i
~J/
SE Berry Valley Rd
~:
~:
.,, ..
.~
c~.
;°
o
Longmire St SE
Project
Site
Not to Scale
`j~(1 Transportation
Engineering
Northwest, LLC
i
1st Street S FJYeIm Ave
~O
~~~ 1ti
o y ~ ?'e
r
.~5~ ~ ,fag
a`aS~` ' y
,,
q~ S`~,~
~~~~ N 15~
;510
507
~eS~'
s~P
lst Street SUMosman /
'L
F/ti ~a6
OC ~ ~ ,; \ F
SSE ~O
q0 ~,r
Figure 4
2006 Without Project
PM Peak Hour Traffic Volumes
Terra Valley
Yelm, Washington
Transportation Impact Study
Addendum
Transportation Engineering Northwest g August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Figure 5.
2006 With Project PM Peak Hour Traffic Volumes
v!
510j ~:
~:
SE Berry Valley Rd i
~+
to
~ i
..
c+
0
~ Longmire St SE
Project
Site
~~ lst Street SFJYeIm Ave
R~
~~11ti
Q !FS ,` ~6?6
sO \ ~ .~ E~?J ytf
i r
~y~ ~b101~~ ~qh
5~ • kq
i~~~ ~~~~
1S
3t^°+.,4
E510°°
.~o~~
d~
Not to Scale
J Transportation
Engineering
Northwest, LLC
Longmire St SW/Yekn Ave
~~
/\
i ~
~ ~o
a ~ ~ s8
'Y~ ~ ~ yam,
/ .F q O ~ 7M
S / j ` ~~ 1bb
i'
y~-
.- `lE'
507 , 1st Street St/Mosman Ave S~y~:
~~ _~,....,~ ~,~ ~~~ ~~a :'
Pie s ~ `ti
1ST ~ ~~o ~`m~ ~! ~
ii .` ?
'i ~ X
ee~SE. 5~
f
Figure 5
2006 With Project
PM Peak Hour Traffic Volumes
Terra Valley
Yeim, Washington
Transportation Impact Study
Addendum
Transportation Engineering Northwest 9 August 25, 2005
Terra Valley Residential Development - Yelm, WA
Intersection LOS Analysis
Transportation Impact Study Addendum
Level of service (LOS) analyses were conducted for weekday PM peak hour
conditions with and without the proposed development in year 2006 at the
following three study intersections:
1. Yelm Avenue / Longmire Street SE
2. Yelm Avenue / 1St Street SE
3. Mosman Avenue SE / 1St Street SE
The weekday PM peak hour. intersection LOS analysis results are summarized in
Table 2. T'he table is set-up to illustrate the LOS results for future conditions
without and with the proposed development. The table also separates the LOS
results for signalized and unsignalized intersections.
Table 2.
Terra Valley Residential Development
2006 PM Peak Hour LOS Summary
Without-Project* With-Project
Study Intersection LOSt Delayz V/C3 LOS Delay V/C
2. ls` Street SE / Yelm Ave 4 E 64.1 1.02. E 65.2 1.03
Unsignalized:
1. Longmire St / Yelm Ave:
EB Left-Turn from Yelm Ave A 9.2 0.01 A 9.2 0.01
WB Left-Turn from Yehn Ave B 12.3 0.24 B 12.6 0.26
Turns from Longmire (NB) E 39.2 0.59 E 43.6 0.63
3. 1St Street SE /Mosman Ave:
NB Left-Turn from 1St Street A 8.1 0.05 A 8.1 0.05
SB Left-Turn from ls` Street A 8.3 0.01 A 8.3 0.01
Turns from Mosman EB D 32.2 0.72 D 33.1 0.73
•. Assumes Phase 1 and 2 of Tahoma Terra.
1. LOS analyses are based on methodologies established in the 2000 Highway Capacity Manual.
2. Delay =average control delay per vehicle.
3. V/C =Volume to Capacity ratio.
4. Si al was assumed to be full actuated; s Tits were o timized under each scenario.
Signalized LO5 Results. It should be noted that the City of Yelm has indicated
the intersection of 1St Street SE/Yelm Avenue currently operates at LOS F during
the PM peak hour due primarily to interference of multiple side-street
intersections and driveways along Yelm Avenue. The traffic analysis using
traditional traffic model software indicates that this intersection would operate at
LOS E during the PM peak hour with or without the project.
Transportation Engineering Northwest 10 August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Unsignalized LOS Results. As shown in Table 2, at the unsignalized
intersection of Longmire Street /Yelm Avenue, the side-street turns from
Longmire Street onto Yelm Avenue are expected to operate at LOS F with or
without the project. Westbound movements at the intersection of lst Street and
Mosman Avenue are expected to operate at LOS E with or without the project.
All other controlled movements at this intersection are anticipated to operate at
LOS D or better during the PM peak hour with or without the project. Detailed
LOS analysis worksheets for study intersections are provided in Appendix B.
With a center left-turn lane on Yelm Avenue at the Longmire Street intersection in
2006 with the project, as part of Tahoma Terra Phases 1 and 2, northbound side-
street movements from Longmire Street to Yelm Ave are expected to improve to
LOS E during the PM peak hour. The center left-turn lane would provide needed
left-turn storage on Yelm Avenue and better facilitate through traffic flow on the
mainline during peak and non-peak travel times.
Site Access Analysis
Primary vehicular access for the development would be provided via two site
driveways onto Longmire Street SE. The eastern driveway known as Terra Glenn
Street SE would serve as the south leg to the Longmire Street SE /Terra Glenn
Street SE intersection with construction of the proposed Tahoma Terra Phases 1
and 2. All plat driveway approaches would consist of single lane approaches.
The internal roadway of Terra Glenn Street SE for the proposed Terra Valley
residential development would provide adequate on-site, two-way circulation and
fire and emergency vehicle access with the driveway entrances onto Longmire
Street SE.
Non-Motorized Impacts
Sidewalks are proposed on all new streets within the proposed development to
accommodate pedestrians and separate them from motorists in the travel lanes.
Half-street curbs and sidewalks would also be provided on all property frontages
along the south side of Longmire Street SE.
Transportation Engineering Northwest 11 August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
Road Improvements
As part of the original Tahoma Terra project, road infrastructure improvements
were identified to mitigate the transportation impacts for each phasing scenario.
Table 3 identifies the road improvements for Phase 1 and 2 of the Tahoma Terra
project.
Table 3.
Road Improvements for the
Terra Valley Residential Development
Added Estimated Estimated Future
Buildout Existing Project Future ADT Capacity with
Project Year Descri tion of Im rovement ADT t Traffic z with Pro'ect3 Im rovement a
Approved
Tahoma Terra 2006- Yelm Ave -widen to provide center
n/a 4,330
n/a
n/a
2007 turn lane at Longmire intersection.
Phase 1 and 2
Longmire -widen travel lanes and 490 4,330 4,820 4,800
add non-motorized aved ath.
Proposed 2006- Longmire -widen to full City
Neighborhood Collector from 490 4,710 6,000 6,000
Terra Valley 2007 Fairwa Drive to Yelm Avenue.
1. ADT =average daily traffic volume.
2. Represents the estimated amount of average daily traffic (ADT) generated by each project development.
3. The total of existing ADT and added ADT from each project development.
4. Re resents the future ca aci , in terns of ADT, for the identified im rovement.
As part of the Tahoma Terra project, it was determined that only 50-feet of right-
of-way was available along Longmire Street SE. As a result, a full City
Neighborhood Collector was not feasible to construct. As a result, a modified
Neighborhood Collector concept was established for Longmire.
This modified Collector will widen Longmire Street SE west of Yelm Avenue to
provide a 5-foot sidewalk and 7-foot planter strip on one side, two 16-foot travel
lanes, curb and gutter on both sides, and a 6-foot planter on one side. Future
development on the other side of the street would contribute additional right-of-
way and construct the sidewalk.
Because the modified Neighborhood Collector provides the two 16-foot travel
lanes, curb on both sides and a sidewalk to separate pedestrians from vehicles, it
provides the full roadway capacity of a City Neighborhood Collector. As a result,
the improved Longmire Street SE will be able to accommodate up to 6,000
average daily traffic (ADT) once it is improved. As shown in Table 6, the
improved Longmire Street SE would accommodate the additional traffic
generated by Tahoma Terra Phases 1 and 2 and the Terra Valley development.
Transportation Engineering Northwest 12 August 25, 2005
Terra Valley Residential Development - Yelm, WA
Transportation Impact Study Addendum
MITIGATION MEASURES
The following measures are identified to mitigate the traffic impacts of the Terra
Valley development.
Traffic Impact Fee
The City of Yelm requires payment of a traffic impact fee based on the number of
PM peak hour trips generated by new development. The City has adopted a
Transportation Facilities Charge (TFC) of $750.00 per PM peak hour trip to pay
for projects on the City's six-year TIP. Based on 40 PM peak hour trips, the TFC
is $30,000.
Non-Motorized Improvements
Standard frontage improvements, including curb/gutter/sidewalk would be
provided on all internal roads with half-street curbs and sidewalks on all property
frontages of Longmire Street SE.
Longmire Street SE Improvements
Widen Longmire Street SE to a modified Neighborhood Collector road west of
Yelm Ave based on the established road section agreement with the City as part of
the Tahoma Terra project for the limited 50-foot right-of--way. This modified
collector would provide a 5-foot sidewalk and 7-foot planter strip on one side, two
16-foot travel lanes, curb and gutter on both sides, and a 6-foot planter on one
side. Future development on the other side of the street would contribute
additional right-of--way and construct the sidewalk.
Transportation Engineering Northwest ] 3 August 25, 2005
Appendix A
Intersection LOS Results
2006 Without-Project
HCS2000: Unsignalized Intersections Release 4.1d
TWO-WAY STOP CONTROL SUMMARY
Analyst: JGT
Agency/Co.: TENW
Date Performed: 7/29/2005
Analysis Time Period: PM Peak
Intersection: #1 Yelm Ave at Longmire
Jurisdiction: City of Yelm
Units: U. S. Customary
Analysis Year: 2006 without Project
Project ID: Terra Valley
East/West Street: Yelm Ave (SR 510)
North/South Street: SW Longmire Street
Intersection Orientation: EW Study period (hrs): 0.25
Vehicle Volumes and Adjustments
Major Street: Approach Eastbound Westbound
Movement 1 2 3 ( 4 5 6
L T R I L T R
Volume 6 962 95 145 687 10
Peak-Hour Factor, PHF 0.97 0.97 0.97 0.94 0.94 0.94
Hourly Flow Rate, HFR 6 991 97 154 730 10
Percent Heavy Vehicles 1 -- -- 1 -- --
Median Type/Storage TWLTL / 7
RT Channelized?
Lanes 1 1 0 1 1 0
Configuration L TR L TR
Upstream Signal? No No
Minor Street: Approach Northbound Southbound
Movement 7 8 9 I 10 11 12
L T R I L T R
Volume 93 0 157 8 1 13
Peak Hour Factor, PHF 0.90 0.90 0.90 0.90 0.90 0.90
Hourly Flow Rate, HFR 103 0 174 8 1 14
Percent Heavy Vehicles 0 0 0 0 0 0
Percent Grade ($) 0 0
Flared Approach: Exists?/Storage No / No /
Lanes 1 1 0 1 1 0
Configuration L TR L TR
Approach
Movement
Lane Config
v (vph)
C (m) (vph)
v/c
95~ queue length
Control Delay
LOS
Approach Delay
Approach LOS
Delay, Queue Length, and Level of Service
EB WB Northbound Southbound
1 4 1 7 8 9 I 10 11 12
L L I L TR I L TR
6 154 103 174 8 15
871 645 191 282 0 369
0.01 0.24 0.54 0.62 0.04
0.02 0.93 2.80 3.78 0.13
9.2 12.3 44.0 36.3 15.2
A B E E F C
39.2
E
HCS2000: Unsignalized Intersections Release 4.1d
TWO-WAY STOP CONTROL SUMMARY
Analyst:
Agency/Co.: TENW
Date Performed: 7/29/2005
Analysis Time Period: PM Peak
Intersection: #3 - 1st St SE at Mosman Ave
Jurisdiction: City of Yelm
Units: U. S. Customary
Analysis Year: 2006 without Project
Project ID: Terry Valley
East/West Street: Mosman Avenue
North/South Street: 1st Street SE
Intersection Orientation: NS Study period (hrs): 0.25
Major Street:
Vehicle Volumes and Adjustments
Approach Northbound Southbound
Movement 1 2 3 1 4 5 6
L T R I L T R
Volume
Peak-Hour Factor, PHF
Hourly Flow Rate, HFR
Percent Heavy Vehicles
Median Type/Storage
RT Channelized?
Lanes
Configuration
Upstream Signal?
50 343 40
0.90. 0.90 0.90
55 381 44
2 -- --
Undivided
0 1 0
LTR
No
12 288 22
0.90 0.90 0.90
13 320 24
5 -- --
0 1 0
LTR
No
Minor Street: Approach Westbound Eastbound
Movement 7 8 9 ~ 10 11 12
L T R I L T R
Volume 60 4 26 58 41 178
Peak Hour Factor, PHF 0.90 0.90 0.90 0.90 0.90 0.90
Hourly Flow Rate, HFR 66 4 28 64 95 197
Percent Heavy Vehicles 3 3 3 1 1 1
Percent Grade ($) 0 0
Flared Approach: Exists?/Storage No / No /
Lanes 0 1 0 0 1 0
Configuration LTR LTR
Delay, Queue Length, and Level of Service
Approach NB SB westbound
Movement 1 4 1 7 8 9 ~ 10
Lane Config LTR LTR I LTR ~
Eastbound
11 12
LTR
v (vph) 55 13 98 306
C(m) (vph) 1215 1118 177 426
v/c 0.05 0.01 0.55 0.72
95~ queue length 0.14 0.04 2.88 5.58
Control Delay 8.1 8.3 48.0 32.2
LOS A A E D
Approach Delay 48.0 32.2
Approach LOS E D
2006 With-Project
HCS2000: Unsignalized Intersections Release 4.1d
TWO-WAY STOP CONTROL SUMMARY
Analyst:
Agency/Co.: TENW
Date Performed: 7/29/2005
Analysis Time Period: PM Peak
Intersection: #1 Yelm Ave at Longmire
Jurisdiction: City of Yelm
Units: U. S. Customary
Analysis Year: 2006 with Pr oject
Project ID: Terra Valley
East/West Street: Yelm Ave (SR 510)
North/South Street: SW Longmire Street
Intersection Orientation: EW Study period (hrs): 0.25
Vehicle Volumes and Adjustments
Major Street: Approach Eas tbound Westbound
Movement 1 2 3 ~ 4 5 6
L T R I L T R
Volume 6 962 103 158 687 10
Peak-Hour Factor, PHF 0.97 0.97 0.97 0.94 0.94 0.99
Hourly Flow Rate, HFR 6 991 106 168 730 10
Percent Heavy Vehicles 1 -- -- 1 -- --
Median Type/Storage TWLTL / 7
RT Channelized?
Lanes 1 1 0 1 1 0
Configuration L TR L TR
Upstream Signal? No No
Minor Street: Approach Nor thbound Southbound
Movement 7 8 9 I 10 11 12
L T R ~ L T R
Volume 98 0 166 8 1 13
Peak Hour Factor, PHF 0.90 0.90 0.90 0.90 0.90 0.90
Hourly Flow Rate, HFR 108 0 184 8 1 14
Percent Heavy Vehicles 0 0 0 0 0 0
Percent Grade (%) 0 0
Flared Approach: Exists?/Storage No / No /
Lanes 1 1 0 1 1 0
Configuration L TR L TR
Delay, Queue Length, and Level of Service
Approach EB WB Northbound Southbound
Movement 1 4 1 7 8 9 I 10 11 12
Lane Config L L ~ L TR I L TR
v (vph) 6 168 108 184 8 15
C(m) (vph) 871 640 180 281 0 360
v/c 0.01 0.26 0.60 0.65 0.04
95~ queue length 0.02 1.05 3.29 4.22 0.13
Control Delay 9.2 12.6 51.2 39.2 15.4
LOS A B F E F C
Approach Delay 43.6
Approach LOS E
HCS2000: Unsignalized Intersections Release 4.1d
TWO-WAY STOP CONTROL SUMMARY
Analyst:
Agency/Co.: TENW
Date Performed: 7/29/2005
Analysis Time Period: PM Peak
Intersection: #3 - 1st St SE at Mosman Ave
Jurisdiction: City of Yelm
Units: U. S. Customary
Analysis Year: 2006 with Project
Project ID: Terry Valley
East/West Street: Mosman Avenue
North/South Street: 1st Street SE
Intersection Orientation: NS Study period (hrs): 0.25
Vehicle Volumes and Adjustments
Major Street: Approach Northbound Southbound
Movement 1 2 3 1 4 5 6
L T R I L T R
Volume 53 343 40 12 288 22
Peak-Hour Factor, PHF 0.90 0.90 0.90 0.90 0.90 0.90
Hourly Flow Rate, HFR 58 381 49 13 320 24
Percent Heavy Vehicles 2 -- -- 5 -- --
Median Type/Storage Undivided /
RT Channelized?
Lanes 0 1 0 0 1 0
Configuration LTR LTR
Upstream Signal? No No
Minor Street: Approach Westbound Eastbound
Movement 7
L 8
T 9
R I 10
I L 11
T 12
R
Volume 60 4 26 58 41 180
Peak Hour Factor, PHF 0.91 0.91 0.91 0.90 0.90 0.90
Hourly Flow Rate, HFR 65 4 28 64 45 200
Percent Heavy Vehicles 3 3 3 1 1 1
Percent Grade (~) 0 0
Flared Approach: Exists?/Storage No / No /
Lanes 0 1 0 0 1 0
Configuration LTR LTR
Delay, Queue Length, and Level of Service
Approach NB SB We stbound Eastbound
Movement 1 4 1 7 8 9 I 10 11 12
Lane Config LTR LTR I LTR I LTR
v (vph) 58 13 97 309
C(m) (vph) 1215 1118 174 424
v/c 0.05 0.01 0.56 0.73
95~ queue length 0.15 0.04 2.90 5.76
Control Delay 8.1 8.3 49.0 33.1
LOS A A E D
Approach Delay 49.0 33.1
Approach LOS E D