20-102338-Traffic Impact Analysis-03-12-2020-V1HEATH & ASSOCIATES, INC Transportation and Civil Engineering
2214 Tacoma Road Puyallup WA 98371 (253) 770 1401 Fax (253) 770 1473 heathtraffic.com
LAKEHAVEN PROJECT
TRAFFIC IMPACT ANALYSIS
Federal Way, WA
Prepared for: Mr. Erik Prestegaard
Helix Design Group, Inc.
6021 12th Street East, Suite 201
Tacoma, WA 98424
March 2020
03/12/2020
LAKEHAVEN PROJECT
TRAFFIC IMPACT ANALYSIS
TABLE OF CONTENTS
1. Introduction ...................................................................................................................3
2. Project Description ........................................................................................................3
3. Existing Conditions ........................................................................................................6
4. Forecast Traffic Demand and Analysis .........................................................................9
5. Conclusions & Mitigation ............................................................................................. 14
Appendix ............................................................................................................................. 15
LIST OF TABLES
1. Bus Routes....................................................................................................................7
2. Project Trip Generation .................................................................................................9
3. Existing & Forecast 2023 PM Peak Hour Level of Service ......................................... 13
LIST OF FIGURES
1.Vicinity Map & Roadway System ..................................................................................4
2. Site Plan ........................................................................................................................5
3. Existing PM Peak Hour Volumes ..................................................................................8
4. PM Peak Hour Trip Distribution & Assignment ............................................................ 11
5. Forecast 2023 PM Peak Hour Volumes ...................................................................... 12
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LAKEHAVEN PROJECT
TRAFFIC IMPACT ANALYSIS
1. INTRODUCTION
The main goals of this study focus on the assessment of existing roadway conditions and
forecasts of newly generated project traffic. The first task includes the review of general
roadway information on the adjacent streets serving the subject site and gathering existing
vehicular volumes within a defined study area. Forecasts of future traffic and dispersion
patterns on the street system are then determined using established trip generation and
distribution techniques. As a final step, appropriate conclusions and mitigation measures
are defined, if needed.
2. PROJECT DESCRIPTION
The Lakehaven Project proposes for the construction of a new Utility District campus in the
city of Federal Way. The site encompasses 12.03-acres on tax parcel: 072104-9017.
Development will encompass one 41,524 square-foot administrative building and several
structures considered ancillary to the administrative building. These supporting structures
include Building 2: a 19,600 square foot vehicle storage building and Building 5: an
additional car port for employees. Existing on-site is a 7,670 square foot administrative
building, a 2,100 square foot Lakehaven Center building (currently utilized as an office
space and meeting/conference/ training building) and a 15,000 square foot building used
for additional office space (8,322 square feet) and as a service repair/water shop. Upon
final buildout, the office space is proposed to be converted to warehousing. The existing
administrative and Lakehaven Center buildings are to be demolished prior to new
construction. The subject site is bordered to the east via 1st Avenue S.
Access to the property is proposed via an existing driveway on 1st Avenue S. The access
is a shared ingress/egress with the South King Fire & Rescue Station #62 neighboring the
subject site on tax parcel #: 072104-9210. An additional driveway serving as egress-only
to firetrucks and vehicles originating from Fire Station #62 is located just north of the
proposed project access. A site map of the general vicinity is illustrated in Figure 1. A
conceptual site design illustrating the overall project configuration is presented in Figure 2.
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FIGURE 2
HEATH & ASSOCIATES
TRAFFIC AND CIVIL ENGINEERING SITE PLAN
LAKEHAVEN
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3. EXISTING CONDITIONS
3.1 Existing Street System
The major roadway serving the proposed project is listed and described below.
1st Avenue S: is a multi-lane minor arterial that borders the subject site to the east. Travel
lanes are approximately 11 feet in width. Adjacent the project frontage, the roadway
consists of one travel lane in either direction and a center two-way left turn lane (TWLTL).
This TWLTL transitions into left turn pockets at major intersections. Marked pedestrian
cross-walks are provided at major intersections. Adjacent the site, shoulders are
composed of pavement 5-7 feet in width. Discontinuous sections of curb, gutter and
sidewalk are available intermittently along the roadway. The posted speed limit is 35 mph.
3.2 Roadway Improvements
A review of the current City of Federal Way 2018-2023 Transportation Improvement Plan
indicates that an improvement project is currently planned in the vicinity of the site.
Descriptions of the nearest projects are provided below.
S 320th Street & 1st Avenue South – Intersection (Map ID # 7):
This project intends to add eastbound left, westbound left, westbound right, northbound
right and/or southbound right lanes. The project additionally intends to widen the
roadway to include 5 lanes from SW 320th Street to SW 316th Street or an alternative
measure. The total estimated cost is $10,460,000.
1st Avenue S: S 292nd Street - S 312th Street – Intersection (Map ID # 19):
This project intends to construct shoulder improvements along 1st Avenue S from S
292nd Street - S 312th Street. The total estimated cost is $3,770,000.
3.3 Non-Motorist Traffic
Pedestrian and bicycle activity were observed at the project’s frontage on 1st Avenue S.
Observations were made during routine PM peak hour movement counts and indicated a
moderate amount of non-motorist activity across the subject property’s frontage with 6
pedestrians and no bicyclists. 1st Avenue S offers incomplete sidewalk infrastructure, and
pedestrians were observed along the paved shoulders. Off-site, half-street frontage
improvements are proposed adjacent to the site along the west side of 1st Avenue S.
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3.4 Public Transit
A review of King County Metro’s service system indicates that numerous public transit
routes are accessible to the subject site. The nearest stops are located at 1st Avenue S &
SW 320th Street (~1,200’ south) and at 1st Avenue S & SW 312th Street (~1,750’ north).
Bus routes nearest in proximity are listed and described in the table below.
Table 1: Bus Routes
Route Description Weekday Service Saturday Sunday Nearest
Stop
179 Twin Lakes P&R to Downtown
Seattle
5:04 AM – 7:17 PM
(every ~30 minutes) None None ~1,200’
181 Twin Lakes P&R to Auburn
Station to Green River College
4:56 AM – 11:34 PM
(every ~20 minutes)
7:05 AM – 11:58 PM
(every ~30 minutes)
8:05 AM – 9:03 PM
(every ~30 minutes) ~1,200’
187 Federal Way TC to Twin Lakes 5:03 AM – 10:09 PM
(every ~30 minutes)
8:00 AM – 9:39 PM
(every ~60 minutes)
9:00 AM – 7:38 PM
(every ~60 minutes) ~1,200’
197 Twin Lakes P&R to University
District
5:23 AM – 7:34 PM
(every ~30 minutes) None None ~1,200’
901 Mirror Lake to Federal Way TC 5:07 AM – 9:41 PM
(every ~30 minutes)
9:05 AM – 9:02 PM
(every ~30 minutes)
10:10 AM – 6:15 PM
(every ~30 minutes) ~1,750’
3.5 Access & Sight Distance
Access to the site is proposed to continue via one existing driveway entrance extending
west from 1st Avenue S as shown in Figure 2. Sight distance observations were
performed to ensure that traffic can exit the site with sufficient visibility to safely enter the
roadway. AASHTO standards1 would require unobstructed sight lines measuring 335 feet
and 390 feet for right- and left turn movements based on the 35-mph speed limit found of
1st Avenue S. Based on preliminary measurements of the existing driveway location, no
safety issues are identified with the access configuration.
3.6 Existing Peak Hour Volumes
A traffic count was performed at the existing access intersection on 1st Avenue S to
determine baseline vehicular activity. Field data was collected in February of 2020 during
the peak weekday period between 4:00-6:00 PM. The one-hour reflecting highest overall
volumes (peak hour) for each time period was then used to analyze worst-case conditions.
Volumes at Fire Station #62’s access (egress-only) just north of the Lakehaven access
were also observed, which totaled 5 PM peak hour trips. Firetruck ingress movements and
Fire Station #62 related traffic was observed at the existing, shared subject site study
access. The PM peak hour intersection volumes identified from the field counts are
illustrated in Figure 3. Full count sheets have been included in the appendix for reference.
1 American Association of State Highway and Transportation Officials (AASHTO).
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4. FORECAST TRAFFIC DEMAND AND ANALYSIS
4.1 Trip Generation
Trip generation is used to determine the magnitude of project impacts on the surrounding
street system. This is usually denoted by the quantity or specific number of new trips that
enter and exit a project during a designated time period, such as a specific peak hour (AM
or PM) or an entire day. Data presented in this report was taken from the Institute of
Transportation Engineer's publication Trip Generation, 10th Edition. As the proposed
development is not an official government office building, the designated land use for this
project is defined as General Office Building (LUC 710). The independent variable, square
footage, was used for trip determination. Net new project trips were determined by
subtracting the square footage of the two existing buildings that are proposed for
demolition from the square footage of the newly proposed administration building (Building
1). As Buildings 2 and 5 on the proposed site plan are ancillary to Building 1, traffic
volumes associated with Buildings 2 and 5 were assumed to be captured within the
Building 1 trip generation. Data for the AM and PM peak hours was used for estimation
purposes and was applied to the intersection network for future capacity analysis. Table 2
below summarizes the estimated project trip generation using ITE rates. Included are the
average net new weekday daily traffic (AWDT) and the net new AM and PM peak hour
volumes.
Table 2: Project Trip Generation
Land Use Code 710
(General Office Bldg.) Size ADT AM Peak-Hour Trips PM Peak-Hour Trips
In Out Total In Out Total
Proposed Building 41,524 sq. ft. 404 41 7 48 8 40 48
Existing Buildings 9,770 sq. ft. 95 9 2 11 2 9 11
Net New 31,754 sq. ft. 309 32 5 37 6 31 37
Based on ITE data, the net new trips generated from the proposed development when
applying a reduction from the existing administration and Lakehaven Center buildings
yields 37 AM peak hour trips (32 inbound / 5 outbound) and 37 PM peak hour trips (6
inbound / 31 outbound).
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4.2 Distribution & Assignment
Trip distribution describes the anticipated travel routes for inbound and outbound project
traffic relative to the local street system. Figure 4 illustrates PM peak hour intersection trip
distributions, which were derived based on existing travel patterns identified from field
counts and proximity to nearby arterials.
4.3 Future Peak Hour Volumes
A 3-year horizon of 2023 was used for future traffic delay analysis. Forecast 2023
background traffic volumes were derived by applying a 1.5 percent compound annual
growth rate per year to the existing traffic through-volumes shown in Figure 3. This growth
rate was derived from the Federal Way Comprehensive Plan, which estimates an average
growth rate of 0.65 percent per year by 20352. Also of note: as existing volumes at the
study access were generated from the adjacent Fire Station #62 as well as a mixture of
on-site operations (i.e.: Building 2— office/water shop, which is to remain with a
conversion to solely warehousing; existing administration/Lakehaven Center buildings), no
trip reductions were considered at the study access in order to remain conservative in
analysis. Forecast 2023 PM peak hour volumes without and with project are shown in
Figure 5.
2 Federal Way Comprehensive Plan—Chapter 2: Land Use
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4.4 Future Level of Service
Peak hour delays were determined through the use of the Highway Capacity Manual 6th
Edition. Capacity analysis is used to determine level of service (LOS) which is an
established measure of congestion for transportation facilities. The range3 for intersection
level of service is LOS A to LOS F with the former indicating the best operating conditions
with low control delays and the latter indicating the worst conditions with heavy control
delays. Detailed descriptions of intersection LOS are given in the 2016 Highway Capacity
Manual. Level of service calculations were made through the use of the Synchro 10
analysis program. For side-street stop-controlled intersections, LOS is determined by the
approach with the highest delay. Table 3 below summarizes calculated delays at the
access intersection.
Table 3: Existing & Forecast 2023 PM Peak Hour Level of Service
Delays Given in Seconds per Vehicle
Existing Without 2023 With 2023
Intersection Control LOS Delay LOS Delay LOS Delay
1st Ave S &
Entrance Stop B 14.2 B 14.6 C 15.6
As indicated in Table 3, forecast 2023 PM peak hour delays are shown to operate with
acceptable service levels of LOS C or better conditions. No forecast operational
deficiencies are identified at the access intersection. Also of note: despite potential
transportation improvement projects planned in the vicinity of the subject site, all forecast
LOS was analyzed under current roadway conditions (3-lanes adjacent the subject site) to
remain conservative in analysis.
3 Signalized Intersections - Level of Service Stop Controlled Intersections – Level of Service
Control Delay per Control Delay per
Level of Service Vehicle (sec) Level of Service Vehicle (sec)
A 10 A 10
B 10 and 20 B 10 and 15
C 20 and 35 C 15 and 25
D 35 and 55 D 25 and 35
E 55 and 80 E 35 and 50
F 80 F 50
Highway Capacity Manual, 6th Edition
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5. CONCLUSIONS AND MITIGATION MEASURES
The Lakehaven Project proposes to construct a 41,524 square-foot administrative building
and several ancillary structures in the city of Federal Way. The subject property is located
on tax parcel #: 072104-9017 (12.03-acres) with a site address of 31627 1st Avenue S.
Primary access to the site is proposed via one existing driveway entrance extending west
from 1st Avenue S. This access is shared with inbound firetruck volumes and additional
traffic associated with employees of Fire Station #62 directly adjacent the subject site on
tax parcel #: 072104-9210. On-site is an existing administrative building, a Lakehaven
Center building and a service repair/water shop (8,322 square feet of office; remainder
warehousing). The existing administrative and Lakehaven Center buildings are to be
demolished prior to new construction. The office space within the service repair/water
shop building will be converted to warehousing upon final site construction. A conceptual
site plan illustrating the overall configuration of the project is presented in Figure 2.
With trip generation credit received from the demolition of the existing administrative and
Lakehaven Center buildings, the project is estimated to generate 37 net new AM and 37
net new PM peak hour trips. Forecast 2023 PM peak hour delays are anticipated to
operate at LOS C or better indicating no operational deficiencies at the access
intersection. The roadway system is shown to have sufficient capacity to support the
incoming project demands.
Based on this analysis, recommended mitigation is as follows:
1.Pay traffic impact fees as required by the city of Federal Way. A review of the City’s
current 2020 Fee Schedule, indicate the following rates:
a.General Office: $6.26 per sf/GFA
b.Warehousing: $1.49 per sf/GFA
Credit for the demolition of the existing administration and Lakehaven Center buildings
would be given and subtracted from the proposed administrative building as follows:
(41,524 x $6.26) - (9,770 x $6.26) = $198,780.04
Additionally, credit would be given for the conversion of the 8,322 square feet of office
within Building 2 into warehousing as follows:
(8,322 x $1.49) - (8,322 x $6.26) = -$39,695.94
With all credit received, the proposed development would result in a total estimated Traffic
Impact Fee as follows:
$198,780.04 - $39,695.94 = $159,084.10
Exact fees and calculations will be determined by the City at the time of building permit
issuance.
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LAKEHAVEN PROJECT
TRAFFIC IMPACT ANALYSIS
APPENDIX
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LEVEL OF SERVICE
The following are excerpts from the 2016 Highway Capacity Manual - Transportation
Research Board Special Report 209.
Six LOS are defined for each type of facility that has analysis procedures available.
Letters designate each level, from A to F, with LOS A representing the best operating
conditions and LOS F the worst. Each level of service represents a range of operating
conditions and the driver’s perception of those conditions.
Level-of-Service definitions
Level of service A represents primarily free-flow operations at average travel speeds,
usually about 90 percent of the free-flow speed for the arterial classification. Vehicles are
seldom impeded in their ability to maneuver in the traffic stream. Delay at signalized
intersections is minimal.
Level of service B represents reasonably unimpeded operations at average travel speeds,
usually about 70 percent of the free-flow speed for the arterial classification. The ability to
maneuver in the traffic stream is only slightly restricted and delays are not bothersome.
Level of service C represents stable operations; however, ability to maneuver and change
lanes in midblock locations may be more restricted than in LOS B, and longer queues,
adverse signal coordination, or both may contribute to lower average travel speeds of
about 50 percent of the average free-flow speed for the arterial classification.
Level of service D borders on a range in which small increases in flow may cause
substantial increases in approach delay and hence decreases in arterial speed. LOS D
may be due to adverse signal progression, inappropriate signal timing, high volumes, or
some combination of these. Average travel speeds are about 40 percent of free-flow
speed.
Level of service E is characterized by significant delays and average travel speeds of one-
third the free-flow speed or less. Such operations are caused by some combination of
adverse progression, high signal density, high volumes, extensive delays at critical
intersections, and inappropriate signal timing.
Level of service F characterizes arterial flow at extremely low speeds, from less than one-
third to one-quarter of the free-flow speed. Intersection congestion is likely at critical
signalized locations, with long delays and extensive queuing.
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File Name : 4288a
Site Code : 00004288
Start Date : 2/25/2020
Page No : 1
Groups Printed- Passenger - Heavy Vehicles
1st Ave S
Southbound
1st Ave S
Northbound
Access
Eastbound
Start Time Right Thru App. Total Thru Left App. Total Right Left App. Total Int. Total
04:00 PM 3 164 167 163 0 163 2 1 3 333
04:15 PM 1 158 159 122 1 123 1 1 2 284
04:30 PM 3 164 167 144 0 144 16 1 17 328
04:45 PM 1 148 149 144 2 146 8 3 11 306
Total 8 634 642 573 3 576 27 6 33 1251
05:00 PM 1 178 179 139 0 139 3 1 4 322
05:15 PM 1 168 169 144 0 144 1 0 1 314
05:30 PM 1 155 156 129 0 129 0 0 0 285
05:45 PM 3 145 148 115 0 115 2 0 2 265
Total 6 646 652 527 0 527 6 1 7 1186
Grand Total 14 1280 1294 1100 3 1103 33 7 40 2437
Apprch %1.1 98.9 99.7 0.3 82.5 17.5
Total %0.6 52.5 53.1 45.1 0.1 45.3 1.4 0.3 1.6
Passenger 9 1257 1266 1093 3 1096 33 7 40 2402
% Passenger 64.3 98.2 97.8 99.4 100 99.4 100 100 100 98.6
Heavy Vehicles 5 23 28 7 0 7 0 0 0 35
% Heavy Vehicles 35.7 1.8 2.2 0.6 0 0.6 0 0 0 1.4
Heath & Associates
2214 Tacoma Rd E
Puyallup, WA, 98371
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File Name : 4288a
Site Code : 00004288
Start Date : 2/25/2020
Page No : 2
1st Ave S Access 1st Ave S
Right
9
5
14
Thru
1257
23
1280
InOut Total
1100 1266 2366
7 28 35
1107 2401 1294
Left
3
0
3
Thru
1093
7
1100
Out TotalIn
1290 1096 2386
23 7 30
1313 2416 1103 Left7 0 7 Right33 0 33 TotalOutIn12 40 52 5 0 5 17 57 40 2/25/2020 04:00 PM
2/25/2020 05:45 PM
Passenger
Heavy Vehicles
North
Heath & Associates
2214 Tacoma Rd E
Puyallup, WA, 98371
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File Name : 4288a
Site Code : 00004288
Start Date : 2/25/2020
Page No : 3
1st Ave S
Southbound
1st Ave S
Northbound
Access
Eastbound
Start Time Right Thru App. Total Thru Left App. Total Right Left App. Total Int. Total
Peak Hour Analysis From 04:00 PM to 05:45 PM - Peak 1 of 1
Peak Hour for Entire Intersection Begins at 04:30 PM
04:30 PM 3 164 167 144 0 144 16 1 17 328
04:45 PM 1 148 149 144 2 146 8 3 11 306
05:00 PM 1 178 179 139 0 139 3 1 4 322
05:15 PM 1 168 169 144 0 144 1 0 1 314
Total Volume 6 658 664 571 2 573 28 5 33 1270
% App. Total 0.9 99.1 99.7 0.3 84.8 15.2
PHF .500 .924 .927 .991 .250 .981 .438 .417 .485 .968
Passenger 3 648 651 569 2 571 28 5 33 1255
% Passenger 50.0 98.5 98.0 99.6 100 99.7 100 100 100 98.8
Heavy Vehicles 3 10 13 2 0 2 0 0 0 15
% Heavy Vehicles 50.0 1.5 2.0 0.4 0 0.3 0 0 0 1.2
1st Ave S Access 1st Ave S
Right
3
3
6
Thru
648
10
658
InOut Total
574 651 1225
2 13 15
576 1240 664
Left
2
0
2
Thru
569
2
571
Out TotalIn
676 571 1247
10 2 12
686 1259 573 Left5 0 5 Right28 0 28 TotalOutIn5 33 38 3 0 3 8 41 33 Peak Hour Begins at 04:30 PM
Passenger
Heavy Vehicles
Peak Hour Data
North
Heath & Associates
2214 Tacoma Rd E
Puyallup, WA, 98371
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HCM 6th TWSC Existing PM Peak Hour
1: 1st Ave S & Project Access 03/09/2020
HCM 6th TWSC Synchro 10 Light Report
Page 1
Intersection
Int Delay, s/veh 0.4
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations
Traffic Vol, veh/h 5 28 2 571 658 6
Future Vol, veh/h 5 28 2 571 658 6
Conflicting Peds, #/hr 0 00000
Sign Control Stop Stop Free Free Free Free
RT Channelized - None - None - None
Storage Length 0 - 0 - - -
Veh in Median Storage, # 1 - - 0 0 -
Grade, % 0 - - 0 0 -
Peak Hour Factor 97 97 97 97 97 97
Heavy Vehicles, % 1 111250
Mvmt Flow 5 29 2 589 678 6
Major/Minor Minor2 Major1 Major2
Conflicting Flow All 1274 681 684 0 - 0
Stage 1 681 -----
Stage 2 593 -----
Critical Hdwy 6.41 6.21 4.11 - - -
Critical Hdwy Stg 1 5.41 -----
Critical Hdwy Stg 2 5.41 -----
Follow-up Hdwy 3.509 3.309 2.209 - - -
Pot Cap-1 Maneuver 185 452 914 - - -
Stage 1 504 -----
Stage 2 554 -----
Platoon blocked, % - - -
Mov Cap-1 Maneuver 185 452 914 - - -
Mov Cap-2 Maneuver 325 -----
Stage 1 503 -----
Stage 2 554 -----
Approach EB NB SB
HCM Control Delay, s 14.2 0 0
HCM LOS B
Minor Lane/Major Mvmt NBL NBTEBLn1 SBT SBR
Capacity (veh/h)914 - 427 - -
HCM Lane V/C Ratio 0.002 - 0.08 - -
HCM Control Delay (s) 8.9 - 14.2 - -
HCM Lane LOS A - B - -
HCM 95th %tile Q(veh) 0 - 0.3 - -
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HCM 6th TWSC Forecast 2023 PM Peak Hour Without Project
1: 1st Ave S & Project Access 03/09/2020
HCM 6th TWSC Synchro 10 Light Report
Page 1
Intersection
Int Delay, s/veh 0.4
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations
Traffic Vol, veh/h 5 29 2 597 688 6
Future Vol, veh/h 5 29 2 597 688 6
Conflicting Peds, #/hr 0 00000
Sign Control Stop Stop Free Free Free Free
RT Channelized - None - None - None
Storage Length 0 - 0 - - -
Veh in Median Storage, # 1 - - 0 0 -
Grade, % 0 - - 0 0 -
Peak Hour Factor 97 97 97 97 97 97
Heavy Vehicles, % 1 111250
Mvmt Flow 5 30 2 615 709 6
Major/Minor Minor2 Major1 Major2
Conflicting Flow All 1331 712 715 0 - 0
Stage 1 712 -----
Stage 2 619 -----
Critical Hdwy 6.41 6.21 4.11 - - -
Critical Hdwy Stg 1 5.41 -----
Critical Hdwy Stg 2 5.41 -----
Follow-up Hdwy 3.509 3.309 2.209 - - -
Pot Cap-1 Maneuver 171 434 890 - - -
Stage 1 488 -----
Stage 2 539 -----
Platoon blocked, % - - -
Mov Cap-1 Maneuver 171 434 890 - - -
Mov Cap-2 Maneuver 311 -----
Stage 1 487 -----
Stage 2 539 -----
Approach EB NB SB
HCM Control Delay, s 14.6 0 0
HCM LOS B
Minor Lane/Major Mvmt NBL NBTEBLn1 SBT SBR
Capacity (veh/h)890 - 410 - -
HCM Lane V/C Ratio 0.002 - 0.085 - -
HCM Control Delay (s) 9.1 - 14.6 - -
HCM Lane LOS A - B - -
HCM 95th %tile Q(veh) 0 - 0.3 - -
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HCM 6th TWSC Forecast 2023 PM Peak Hour With Project
1: 1st Ave S & Project Access 03/09/2020
HCM 6th TWSC Synchro 10 Light Report
Page 1
Intersection
Int Delay, s/veh 0.8
Movement EBL EBR NBL NBT SBT SBR
Lane Configurations
Traffic Vol, veh/h 10 55 4 597 688 10
Future Vol, veh/h 10 55 4 597 688 10
Conflicting Peds, #/hr 0 00000
Sign Control Stop Stop Free Free Free Free
RT Channelized - None - None - None
Storage Length 0 - 0 - - -
Veh in Median Storage, # 1 - - 0 0 -
Grade, % 0 - - 0 0 -
Peak Hour Factor 97 97 97 97 97 97
Heavy Vehicles, % 1 111250
Mvmt Flow 10 57 4 615 709 10
Major/Minor Minor2 Major1 Major2
Conflicting Flow All 1337 714 719 0 - 0
Stage 1 714 -----
Stage 2 623 -----
Critical Hdwy 6.41 6.21 4.11 - - -
Critical Hdwy Stg 1 5.41 -----
Critical Hdwy Stg 2 5.41 -----
Follow-up Hdwy 3.509 3.309 2.209 - - -
Pot Cap-1 Maneuver 170 433 887 - - -
Stage 1 487 -----
Stage 2 537 -----
Platoon blocked, % - - -
Mov Cap-1 Maneuver 169 433 887 - - -
Mov Cap-2 Maneuver 309 -----
Stage 1 485 -----
Stage 2 537 -----
Approach EB NB SB
HCM Control Delay, s 15.6 0.1 0
HCM LOS C
Minor Lane/Major Mvmt NBL NBTEBLn1 SBT SBR
Capacity (veh/h)887 - 408 - -
HCM Lane V/C Ratio 0.005 - 0.164 - -
HCM Control Delay (s) 9.1 - 15.6 - -
HCM Lane LOS A - C - -
HCM 95th %tile Q(veh) 0 - 0.6 - -
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