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HomeMy WebLinkAboutRS_44th_Street_Construction_Office_TIA_250228_v1 44TH STREET TEMPORARY FIELD OFFICE TRAFFIC IMPACT ANALYSIS REPORT MARCH 20, 2020 PREPARED FOR: FLATIRON-LANE JOINT VENTURE PREPARED BY: Wood Environment and Infrastructure Solutions, Inc. 3/20/2020 Traffic Impact Analysis Report Flatiron-Lane JV – Temporary Field Office Introduction Flatiron-Lane JV is proposing the implementation of Temporary Field Office Trailers on site at the Former Pan Abode Site at 4350 Lake Washington Boulevard, North. This parcel is approximately 312,776 Square Feet, or 7.18 Acres. The property is located just north of the May Creek Trail Entrance and just West of I-405. The project will utilize the Temp-Use Permit for Flatiron-Lane JV for (5) years. The zoning designation for this parcel is called out as COR. Meanwhile, the May Creek Trail Parcel is directly south of the parcel and is Zoned R-6. Lake Washington Boulevard, North runs from the southwest corner of the parcel to the northernmost point of the property. Figure 1a: Area Location Map Site Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 2 There are four intersections in the vicinity of this site that may be impacted by the traffic generated by this development. This report studies the traffic operations at these intersections with and without this development. These intersections are either two-way stop-controlled or all- way stop controlled intersections. The intersections include: 44th Street at I-405 at NB Ramps/Lake Washington Boulevard 44th Street at I-405 SB Ramps, 44th Street at Seahawks Way 44th Street at 43rd Street Figure 1b: Study Intersections I - 405 and the N 44th Street Exit Lane/Ramp run along the parcel’s eastern side. The site is currently partially vacant with some use of one of the existing long metal hangar building. Currently, there are 4 existing structures on site, 3 are metal-framed structures while one is of Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 3 wood-framing. Flatiron-Lane JV is proposing to demolish the existing wood framed office building and one of the metal-framed buildings located at the center of the parcel. Access to the site will be via the existing driveway at the intersection of 44th Street and Seahawks Way. Figure 2 shows the conceptual site plan for this site. Figure 2: Conceptual Site Plan The site is anticipated to have a total of 150 employees (Flatiron-Lane JV and WSDOT employees combined). 75 of these employees will have normal working hours between 7 am to 5 pm, 40 of these employees will be involved with field inspections and need to make 2 to 3 trips to the construction site per day and these trips will be spread through the normal working hours of 7 am to 5 pm. 35 employees involved with field inspections may need to make up to 6 trips per day and these trips are spread through the normal work hours of 7 am to 5 pm. In addition, up to 20 trips per day may be made by delivery trucks. No large equipment and machinery are anticipated to be coming to the site for maintenance or refueling. Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 4 Trip Generation The field office will function similarly to the ITE land use description of General Light Industrial site. ITE Land Use code 110 – General Light Industrial was used for estimating the trips generated by this site. Table 1 shows the trips generated by this site, assuming 150 employees. Table 1: Trip Generation – ITE Land Use Code 110, Unit: 150 employees Daily AM Peak PM Peak Enter Exit Enter Exit 453 55 11 13 50 Trip Distribution The proposed site is a construction field office. While developing the trip distribution, trips to and from I-405 construction site and the regular travel patterns in the area were considered. Table 2 shows the trips from this site distributed over the various thoroughfares in vicinity of this site. Table 2: Trip Distribution Roadway AM Peak PM Peak Enter Exit Enter Exit I-405 South 30% 30% 30% 30% I-405 North 30% 30% 30% 30% Lake Washington Boulevard 10% 10% 10% 10% 44th Street (East) 15% 15% 15% 15% 44th Street (West) 15% 15% 15% 15% Trip Assignment Site traffic is distributed through the study area intersections using the percentages shown in the Table 2. Figure 3a and 3b show the AM and PM peak hour trips assigned for the study area intersections. Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 5 Figure 3a: Site Traffic Assignment – AM Peak Figure 3b: Site Traffic Assignment – PM Peak Site Traffic 43rd Street Seahawks Way 0 0 0 0 17 0 6 1 Rght Rght Rght Rght 2 Thru 2 2 Thru 47 17 Thru 30 30 6 Thru 8 8 Rght Left Rght Thru Left Left 47 Rght Thru Left Left Rght Thru Left Left Left Left Left Thru Rght Left Left Thru Rght 1 Left Left Thru Rght 8 8 Thru 8 Thru 2 9 9 6 Thru 6 2 Thru 17 2 8 Rght 3 Rght 3 Rght 55 11 3 0 3 17 Seahawks Way 44 t h S t r e e t 44 t h S t r e e t I-405 SB Off Ramp I-405 NB Off Ramp AM Peak I-405 SB Off Ramp Lake Washington Blvd Site Traffic 43rd Street Seahawks Way 0 0 0 0 4 0 1 5 Rght Rght Rght Rght 8 Thru 8 8 Thru 11 4 Thru 7 7 1 Thru 2 2 Rght Left Rght Thru Left Left 11 Rght Thru Left Left Rght Thru Left Left Left Left Left Thru Rght Left Left Thru Rght 5 Left Left Thru Rght 2 2 Thru 2 Thru 8 43 43 28 Thru 28 8 Thru 4 8 2 Rght 15 Rght 15 Rght 13 50 15 0 15 4 Seahawks Way 44 t h S t r e e t I-405 SB Off Ramp I-405 NB Off Ramp PM Peak I-405 SB Off Ramp Lake Washington Blvd 44 t h S t r e e t Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 6 Existing and Proposed Volumes Washington State DOT completed an Intersection Control Analysis (ICA) Report for the study intersection along 44th Street. This report included 2016 and projected 2025 volumes. To obtain volumes for the study intersections, the 2016 volumes from this report were grown to 2020 conditions, using the same growth as used in the report to project 2016 to 2025 conditions. Figures 4a and 4b show the existing 2020 volumes for the study area intersections. Since the proposed development will be functional by mid-April of this year, the existing volumes also represent the horizon year (without development) conditions. Figure 4a: Existing Traffic Volumes – AM Peak Figure 4b: Existing Traffic Volumes – PM Peak 2020 Existing 43rd Street Seahawks Way 75 30 65 65 140 0 400 245 Rght 15 Rght 40 Rght Rght 45 205 50 25 Thru 155 170 10 0 55 Thru 160 200 70 70 Thru 130 495 325 35 40 Thru 160 490 Rght Left Rght Thru Left Left 0 Rght Thru Left Left 365 Rght Thru Left Left 285 15 Left 25 Left Left Thru Rght Left Left Thru Rght 145 Left Left Thru Rght 700 685 Thru 705 675 Thru 0 0 0 730 710 Thru 780 155 Thru 10 55 105 300 5 Rght 20 Rght 480 Rght 5 0 385 0 800 170 Seahawks Way AM Peak I-405 SB Off Ramp Lake Washington Blvd 44 t h S t r e e t 44 t h S t r e e t I-405 SB Off Ramp I-405 NB Off Ramp 2020 Existing 43rd Street Seahawks Way 55 100 80 85 265 0 715 395 Rght 50 Rght 65 Rght Rght 55 530 30 25 Thru 500 550 20 0 60 Thru 530 595 185 25 55 Thru 410 795 625 20 70 Thru 150 295 Rght Left Rght Thru Left Left 0 Rght Thru Left Left 335 Rght Thru Left Left 90 50 Left 20 Left Left Thru Rght Left Left Thru Rght 100 Left Left Thru Rght 265 215 Thru 240 220 Thru 0 0 0 280 250 Thru 305 115 Thru 20 240 150 335 0 Rght 30 Rght 90 Rght 0 0 390 0 200 410 Seahawks Way PM Peak I-405 SB Off Ramp Lake Washington Blvd I-405 SB Off Ramp I-405 NB Off Ramp 44 t h S t r e e t 44 t h S t r e e t Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 7 Volumes with Development Figures 5a and 5b show the 2020 volumes with site traffic. The site traffic volume shown in Figure 3a and 3b are added to 2020 existing volumes shown in Figure 4a and 4b, to obtain the proposed condition with site volumes. These volumes are further referred to as 2020 Buildout volumes. Figure 5a: Buildout Traffic Volumes – AM Peak Figure 5b: Buildout Traffic Volumes – PM Peak Traffic Analysis and Conclusions Traffic Engineering software Synchro Version 9 was used to model the study area intersections. Delay and LOS for the study area intersections were derived based on the Highway Capacity Manual 2010. Typically, in an urban condition, LOS A through D are considered as acceptable LOS and do not need mitigation to reduce delay and improve traffic operations. Table 3 shows the Intersection LOS and Delay for existing (without site traffic) and buildout conditions. Comparison of the LOS and delay shows minimal impacts to the traffic operations at the study intersection due to the proposed construction field office at the southwest corner of 44th Street and I-405. All study area intersections operate at LOS D or better except for the southbound approach of I-405 SB off ramp. 2020 Buildout 43rd Street Seahawks Way 75 30 65 65 157 0 406 246 Rght 15 Rght 40 Rght 45 207 50 25 Thru 157 172 10 0 55 Thru 160 247 87 0 70 Thru 160 525 331 35 40 Thru 168 498 Rght Left Rght Thru Left Left 47 Rght Thru Left Left 365 Rght Thru Left Left 285 15 Left 25 Left Left Thru Rght 146 Left Left Thru Rght 708 693 Thru 713 675 Thru 2 0 9 739 716 Thru 786 157 Thru 27 55 105 302 13 Rght 23 Rght 483 Rght 60 11 388 0 803 187 Seahawks Way 44 t h S t r e e t I-405 SB Off Ramp I-405 NB Off Ramp AM Peak I-405 SB Off Ramp Lake Washington Blvd 44 t h S t r e e t 2020 Buildout 43rd Street Seahawks Way 55 100 80 85 269 0 716 400 Rght 50 Rght 65 Rght 55 538 30 25 Thru 508 558 20 0 60 Thru 530 606 189 25 55 Thru 417 825 626 20 70 Thru 152 297 Rght Left Rght Thru Left Left 11 Rght Thru Left Left 335 Rght Thru Left Left 90 50 Left 20 Left Left Thru Rght 105 Left Left Thru Rght 267 217 Thru 242 220 Thru 8 0 43 323 278 Thru 333 123 Thru 24 240 150 343 2 Rght 45 Rght 105 Rght 13 50 405 0 215 414 Seahawks Way 44 t h S t r e e t 44 t h S t r e e t I-405 SB Off Ramp I-405 NB Off Ramp PM Peak I-405 SB Off Ramp Lake Washington Blvd Flatiron-Lane JV Field Office Trailer Rental/Laydown Area Revision 1 March 20, 2020 woodplc.com Page 8 The I-405 SB off ramp, operates at LOS F in the AM peak and PM peak periods, in the existing conditions and continues to operate at LOS F in the AM peak and PM peak periods, with the proposed development and the change in the delay due to site traffic is minimum < 10 seconds. At the intersection of 44th Street at Lake Washington Boulevard, the eastbound approach of 44th Street, northbound approach of I-405 NB off-ramp, and the southbound approach of Lake Washington Boulevard, operate at LOS F in either or both the AM peak and PM peak periods, in the existing conditions and continues to operate at LOS F in the AM peak and PM peak periods, with the proposed development and the change in the delay due to site traffic is minimum < 10 seconds. No new mitigation is needed at these intersections to accommodate the traffic generated by this development. Table 3: Study Intersection along 44th Street - Approach LOS and Delay: Comparison of Existing and Buildout Conditions Intersection Time Existing Buildout EB WB NB SB EB WB NB SB 43rd Street AM PM 0.2/A 1.7/A 0.0/A 0.0/A - - 13.4/B 16.3/C 0.2/A 1.7/A 0.0/A 0.0/A - - 13.5 B 16.5/C Seahawks Way AM PM 0.3/A 0.7/A 0.0/A 0.0/A - - 24.9/C 22.6/C 0.3/A 0.7/A 1.8/A 0.1/A 16.2/C 11.9/B 33.2/D 26.1/D I-405 SB Ramps AM PM 0.0/A 0.0/A 9.3/A 4.1/A - - 218.4/F 50.1/F 0.0/A 0.0/A 9.8/A 4.1/A - - 219.9/F 56.6/F Lake Washington Blvd. AM PM 109.7/F 27.1/D 29.7/D 18.6/C 20.1/C 75.5/F 73.6/F 340.3/F 118.2/F 29.3/D 31.4/D 19.1/C 22.8/C 83.5/F 82.6/F 346.1/F HCM 2010 TWSC 3: 44th Street & 43rd St 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Int Delay, s/veh 1.2 Movement SEL SER NEL NET SWT SWR Lane Configurations Traffic Vol, veh/h 25 50 15 685 155 15 Future Vol, veh/h 25 50 15 685 155 15 Conflicting Peds, #/hr 0 0 0 0 0 0 Sign Control Stop Stop Free Free Free Free RT Channelized - None - None - None Storage Length 0 - - - - - Veh in Median Storage, # 0 - - 0 0 - Grade, %0 - - 0 0 - Peak Hour Factor 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 Mvmt Flow 27 54 16 745 168 16 Major/Minor Minor2 Major1 Major2 Conflicting Flow All 953 176 184 0 - 0 Stage 1 176 - - - - - Stage 2 777 - - - - - Critical Hdwy 6.42 6.22 4.12 - - - Critical Hdwy Stg 1 5.42 - - - - - Critical Hdwy Stg 2 5.42 - - - - - Follow-up Hdwy 3.518 3.318 2.218 - - - Pot Cap-1 Maneuver 287 867 1391 - - - Stage 1 855 - - - - - Stage 2 453 - - - - - Platoon blocked, %- - - Mov Cap-1 Maneuver 281 867 1391 - - - Mov Cap-2 Maneuver 281 - - - - - Stage 1 838 - - - - - Stage 2 453 - - - - - Approach SE NE SW HCM Control Delay, s 13.4 0.2 0 HCM LOS B Minor Lane/Major Mvmt NEL NET SELn1 SWT SWR Capacity (veh/h)1391 - 511 - - HCM Lane V/C Ratio 0.012 - 0.16 - - HCM Control Delay (s) 7.6 0 13.4 - - HCM Lane LOS A A B - - HCM 95th %tile Q(veh) 0 - 0.6 - - HCM 2010 TWSC 5: Site Drwy/Seahawks Way & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 2 Intersection Int Delay, s/veh 1.9 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 25 675 5 0 160 40 0 0 0 55 0 10 Future Vol, veh/h 25 675 5 0 160 40 0 0 0 55 0 10 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 75 - - - - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 27 734 5 0 174 43 0 0 0 60 0 11 Major/Minor Major1 Major2 Minor1 Minor2 Conflicting Flow All 217 0 0 739 0 0 992 1008 737 987 989 196 Stage 1 - - - - - - 791 791 - 196 196 - Stage 2 - - - - - - 201 217 - 791 793 - Critical Hdwy 4.12 - - 4.12 - - 7.12 6.52 6.22 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - - - - 6.12 5.52 - 6.12 5.52 - Critical Hdwy Stg 2 - - - - - - 6.12 5.52 - 6.12 5.52 - Follow-up Hdwy 2.218 - - 2.218 - - 3.518 4.018 3.318 3.518 4.018 3.318 Pot Cap-1 Maneuver 1353 - - 867 - - 225 240 418 226 247 845 Stage 1 - - - - - - 383 401 - 806 739 - Stage 2 - - - - - - 801 723 - 383 400 - Platoon blocked, %- -- - Mov Cap-1 Maneuver 1353 - - 867 - - 219 235 418 223 242 845 Mov Cap-2 Maneuver - - - - - - 219 235 - 223 242 - Stage 1 - - - - - - 375 393 - 790 739 - Stage 2 - - - - - - 791 723 - 375 392 - Approach EB WB NB SB HCM Control Delay, s 0.3 0 0 24.9 HCM LOS A C Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h)- 1353 - - 867 - - 251 HCM Lane V/C Ratio - 0.02 - - - - - 0.281 HCM Control Delay (s) 0 7.7 - - 0 - - 24.9 HCM Lane LOS A A - - A - - C HCM 95th %tile Q(veh) - 0.1 - - 0 - - 1.1 HCM 2010 TWSC 7: 44th Street & I-405 SB Off Ramp 03/12/2020 Baseline Synchro 9 Report Page 3 Intersection Int Delay, s/veh 26.1 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 0 710 20 365 130 0 0 0 0 70 0 70 Future Vol, veh/h 0 710 20 365 130 0 0 0 0 70 0 70 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - 130 - - - - - - - 120 Veh in Median Storage, # - 0 - - 0 - - - - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 0 772 22 397 141 0 0 0 0 76 0 76 Major/Minor Major1 Major2 Minor2 Conflicting Flow All - 0 0 794 0 0 1718 1729 141 Stage 1 - - - - - -935 935 - Stage 2 - - - - - -783 794 - Critical Hdwy - - - 4.12 - -6.42 6.52 6.22 Critical Hdwy Stg 1 - - - - - -5.42 5.52 - Critical Hdwy Stg 2 - - - - - -5.42 5.52 - Follow-up Hdwy - - - 2.218 - -3.518 4.018 3.318 Pot Cap-1 Maneuver 0 - - 827 - 0 99 88 907 Stage 1 0 - - - - 0 382 344 - Stage 2 0 - - - - 0 450 400 - Platoon blocked, %- -- Mov Cap-1 Maneuver - - - 827 - -~ 51 0 907 Mov Cap-2 Maneuver - - - - - -~ 51 0 - Stage 1 - - - - - -382 0 - Stage 2 - - - - - -234 0 - Approach EB WB SB HCM Control Delay, s 0 9.8 219.9 HCM LOS F Minor Lane/Major Mvmt EBT EBR WBL WBT SBLn1 SBLn2 Capacity (veh/h)- - 827 - 51 907 HCM Lane V/C Ratio - - 0.48 - 1.492 0.084 HCM Control Delay (s) - - 13.3 -$ 430.5 9.3 HCM Lane LOS - - B - F A HCM 95th %tile Q(veh) - - 2.6 - 7.1 0.3 Notes ~: Volume exceeds capacity $: Delay exceeds 300s +: Computation Not Defined *: All major volume in platoon HCM 2010 AWSC 1: I-405 NB Off Ramp/Lake Washington Blvd & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Intersection Delay, s/veh 72.3 Intersection LOS F Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 145 155 480 285 160 45 10 55 105 40 35 325 Future Vol, veh/h 145 155 480 285 160 45 10 55 105 40 35 325 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 Heavy Vehicles, %2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 158 168 522 310 174 49 11 60 114 43 38 353 Number of Lanes 0 1 1 1 1 1 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 3 2 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 2 3 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 3 2 HCM Control Delay 109.7 29.7 20.1 73.6 HCM LOS F D C F Lane NBLn1 EBLn1 EBLn2 WBLn1 WBLn2 WBLn3 SBLn1 Vol Left, %6% 48% 0% 100% 0% 0% 10% Vol Thru, %32% 52% 0% 0% 100% 0% 9% Vol Right, %62% 0% 100% 0% 0% 100% 81% Sign Control Stop Stop Stop Stop Stop Stop Stop Traffic Vol by Lane 170 300 480 285 160 45 400 LT Vol 10 145 0 285 0 0 40 Through Vol 55 155 0 0 160 0 35 RT Vol 105 0 480 0 0 45 325 Lane Flow Rate 185 326 522 310 174 49 435 Geometry Grp 7 8 8 7 7 7 7 Degree of Util (X)0.472 0.854 1.229 0.791 0.42 0.109 1 Departure Headway (Hd)9.343 9.423 8.483 9.194 8.691 8.088 8.623 Convergence, Y/N Yes Yes Yes Yes Yes Yes Yes Cap 388 388 433 393 412 446 426 Service Time 7.043 7.123 6.183 6.988 6.488 5.788 6.323 HCM Lane V/C Ratio 0.477 0.84 1.206 0.789 0.422 0.11 1.021 HCM Control Delay 20.1 47.8 148.4 39.2 17.7 11.8 73.6 HCM Lane LOS C E F E C B F HCM 95th-tile Q 2.4 8.1 21.3 6.8 2 0.4 12.5 HCM 2010 TWSC 3: 44th Street & 43rd St 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Int Delay, s/veh 1.5 Movement SEL SER NEL NET SWT SWR Lane Configurations Traffic Vol, veh/h 25 30 50 215 500 50 Future Vol, veh/h 25 30 50 215 500 50 Conflicting Peds, #/hr 0 0 0 0 0 0 Sign Control Stop Stop Free Free Free Free RT Channelized - None - None - None Storage Length 0 - - - - - Veh in Median Storage, # 0 - - 0 0 - Grade, %0 - - 0 0 - Peak Hour Factor 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 Mvmt Flow 27 33 54 234 543 54 Major/Minor Minor2 Major1 Major2 Conflicting Flow All 912 570 597 0 - 0 Stage 1 570 - - - - - Stage 2 342 - - - - - Critical Hdwy 6.42 6.22 4.12 - - - Critical Hdwy Stg 1 5.42 - - - - - Critical Hdwy Stg 2 5.42 - - - - - Follow-up Hdwy 3.518 3.318 2.218 - - - Pot Cap-1 Maneuver 304 521 980 - - - Stage 1 566 - - - - - Stage 2 719 - - - - - Platoon blocked, %- - - Mov Cap-1 Maneuver 285 521 980 - - - Mov Cap-2 Maneuver 285 - - - - - Stage 1 530 - - - - - Stage 2 719 - - - - - Approach SE NE SW HCM Control Delay, s 16.3 1.7 0 HCM LOS C Minor Lane/Major Mvmt NEL NET SELn1 SWT SWR Capacity (veh/h)980 - 379 - - HCM Lane V/C Ratio 0.055 - 0.158 - - HCM Control Delay (s) 8.9 0 16.3 - - HCM Lane LOS A A C - - HCM 95th %tile Q(veh) 0.2 - 0.6 - - HCM 2010 TWSC 5: Site Drwy/Seahawks Way & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 2 Intersection Int Delay, s/veh 2.2 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 20 220 0 0 530 65 0 0 0 60 0 20 Future Vol, veh/h 20 220 0 0 530 65 0 0 0 60 0 20 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 75 - - - - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 22 239 0 0 576 71 0 0 0 65 0 22 Major/Minor Major1 Major2 Minor1 Minor2 Conflicting Flow All 647 0 0 239 0 0 906 930 239 895 895 612 Stage 1 - - - - - - 283 283 - 612 612 - Stage 2 - - - - - - 623 647 - 283 283 - Critical Hdwy 4.12 - - 4.12 - - 7.12 6.52 6.22 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - - - - 6.12 5.52 - 6.12 5.52 - Critical Hdwy Stg 2 - - - - - - 6.12 5.52 - 6.12 5.52 - Follow-up Hdwy 2.218 - - 2.218 - - 3.518 4.018 3.318 3.518 4.018 3.318 Pot Cap-1 Maneuver 939 - - 1328 - - 257 267 800 261 280 493 Stage 1 - - - - - - 724 677 - 480 484 - Stage 2 - - - - - - 474 467 - 724 677 - Platoon blocked, %- -- - Mov Cap-1 Maneuver 939 - - 1328 - - 241 261 800 256 274 493 Mov Cap-2 Maneuver - - - - - - 241 261 - 256 274 - Stage 1 - - - - - - 707 661 - 469 484 - Stage 2 - - - - - - 453 467 - 707 661 - Approach EB WB NB SB HCM Control Delay, s 0.7 0 0 22.6 HCM LOS A C Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h)- 939 - - 1328 - - 291 HCM Lane V/C Ratio - 0.023 - - - - - 0.299 HCM Control Delay (s) 0 8.9 - - 0 - - 22.6 HCM Lane LOS A A - - A - - C HCM 95th %tile Q(veh) - 0.1 - - 0 - - 1.2 HCM 2010 TWSC 7: 44th Street & I-405 SB Off Ramp 03/12/2020 Baseline Synchro 9 Report Page 3 Intersection Int Delay, s/veh 12.5 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 0 250 30 335 410 0 0 0 0 55 25 185 Future Vol, veh/h 0 250 30 335 410 0 0 0 0 55 25 185 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - 130 - - - - - - - 120 Veh in Median Storage, # - 0 - - 0 - - - - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 0 272 33 364 446 0 0 0 0 60 27 201 Major/Minor Major1 Major2 Minor2 Conflicting Flow All - 0 0 305 0 0 1463 1479 446 Stage 1 - - - - - -1174 1174 - Stage 2 - - - - - -289 305 - Critical Hdwy - - - 4.12 - -6.42 6.52 6.22 Critical Hdwy Stg 1 - - - - - -5.42 5.52 - Critical Hdwy Stg 2 - - - - - -5.42 5.52 - Follow-up Hdwy - - - 2.218 - -3.518 4.018 3.318 Pot Cap-1 Maneuver 0 - - 1256 - 0 142 126 612 Stage 1 0 - - - - 0 294 266 - Stage 2 0 - - - - 0 760 662 - Platoon blocked, %- -- Mov Cap-1 Maneuver - - - 1256 - -101 0 612 Mov Cap-2 Maneuver - - - - - -101 0 - Stage 1 - - - - - -294 0 - Stage 2 - - - - - -540 0 - Approach EB WB SB HCM Control Delay, s 0 4.1 49.1 HCM LOS E Minor Lane/Major Mvmt EBT EBR WBL WBT SBLn1 SBLn2 Capacity (veh/h)- - 1256 - 101 612 HCM Lane V/C Ratio - - 0.29 - 0.861 0.329 HCM Control Delay (s) - - 9 - 131 13.7 HCM Lane LOS - - A - F B HCM 95th %tile Q(veh) - - 1.2 - 4.9 1.4 HCM 2010 AWSC 1: I-405 NB Off Ramp/Lake Washington Blvd & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Intersection Delay, s/veh 167 Intersection LOS F Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 100 115 90 90 150 55 20 240 150 70 20 625 Future Vol, veh/h 100 115 90 90 150 55 20 240 150 70 20 625 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 Heavy Vehicles, %2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 109 125 98 98 163 60 22 261 163 76 22 679 Number of Lanes 0 1 1 1 1 1 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 3 2 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 2 3 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 3 2 HCM Control Delay 27.1 18.6 75.5 340.3 HCM LOS D C F F Lane NBLn1 EBLn1 EBLn2 WBLn1 WBLn2 WBLn3 SBLn1 Vol Left, %5% 47% 0% 100% 0% 0% 10% Vol Thru, %59% 53% 0% 0% 100% 0% 3% Vol Right, %37% 0% 100% 0% 0% 100% 87% Sign Control Stop Stop Stop Stop Stop Stop Stop Traffic Vol by Lane 410 215 90 90 150 55 715 LT Vol 20 100 0 90 0 0 70 Through Vol 240 115 0 0 150 0 20 RT Vol 150 0 90 0 0 55 625 Lane Flow Rate 446 234 98 98 163 60 777 Geometry Grp 7 8 8 7 7 7 7 Degree of Util (X)0.995 0.628 0.237 0.26 0.411 0.139 1.692 Departure Headway (Hd)9.324 11.437 10.432 11.218 10.687 9.943 7.838 Convergence, Y/N Yes Yes Yes Yes Yes Yes Yes Cap 392 318 346 323 339 363 466 Service Time 7.024 9.137 8.132 8.918 8.387 7.643 5.607 HCM Lane V/C Ratio 1.138 0.736 0.283 0.303 0.481 0.165 1.667 HCM Control Delay 75.5 31.6 16.3 17.8 20.6 14.2 340.3 HCM Lane LOS F D C C C B F HCM 95th-tile Q 11.9 4 0.9 1 1.9 0.5 45.7 HCM 2010 TWSC 3: 44th Street & 43rd St 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Int Delay, s/veh 1.2 Movement SEL SER NEL NET SWT SWR Lane Configurations Traffic Vol, veh/h 25 50 15 693 157 15 Future Vol, veh/h 25 50 15 693 157 15 Conflicting Peds, #/hr 0 0 0 0 0 0 Sign Control Stop Stop Free Free Free Free RT Channelized - None - None - None Storage Length 0 - - - - - Veh in Median Storage, # 0 - - 0 0 - Grade, %0 - - 0 0 - Peak Hour Factor 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 Mvmt Flow 27 54 16 753 171 16 Major/Minor Minor2 Major1 Major2 Conflicting Flow All 964 179 187 0 - 0 Stage 1 179 - - - - - Stage 2 785 - - - - - Critical Hdwy 6.42 6.22 4.12 - - - Critical Hdwy Stg 1 5.42 - - - - - Critical Hdwy Stg 2 5.42 - - - - - Follow-up Hdwy 3.518 3.318 2.218 - - - Pot Cap-1 Maneuver 283 864 1387 - - - Stage 1 852 - - - - - Stage 2 449 - - - - - Platoon blocked, %- - - Mov Cap-1 Maneuver 277 864 1387 - - - Mov Cap-2 Maneuver 277 - - - - - Stage 1 835 - - - - - Stage 2 449 - - - - - Approach SE NE SW HCM Control Delay, s 13.5 0.2 0 HCM LOS B Minor Lane/Major Mvmt NEL NET SELn1 SWT SWR Capacity (veh/h)1387 - 506 - - HCM Lane V/C Ratio 0.012 - 0.161 - - HCM Control Delay (s) 7.6 0 13.5 - - HCM Lane LOS A A B - - HCM 95th %tile Q(veh) 0 - 0.6 - - HCM 2010 TWSC 5: Site Drwy/Seahawks Way & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 2 Intersection Int Delay, s/veh 2.9 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 25 675 13 47 160 40 2 0 9 55 0 10 Future Vol, veh/h 25 675 13 47 160 40 2 0 9 55 0 10 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 75 - - - - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 27 734 14 51 174 43 2 0 10 60 0 11 Major/Minor Major1 Major2 Minor1 Minor2 Conflicting Flow All 217 0 0 748 0 0 1098 1114 741 1098 1100 196 Stage 1 - - - - - - 795 795 - 298 298 - Stage 2 - - - - - - 303 319 - 800 802 - Critical Hdwy 4.12 - - 4.12 - - 7.12 6.52 6.22 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - - - - 6.12 5.52 - 6.12 5.52 - Critical Hdwy Stg 2 - - - - - - 6.12 5.52 - 6.12 5.52 - Follow-up Hdwy 2.218 - - 2.218 - - 3.518 4.018 3.318 3.518 4.018 3.318 Pot Cap-1 Maneuver 1353 - - 861 - - 190 208 416 190 212 845 Stage 1 - - - - - - 381 399 - 711 667 - Stage 2 - - - - - - 706 653 - 379 396 - Platoon blocked, %- -- - Mov Cap-1 Maneuver 1353 - - 861 - - 175 190 416 173 194 845 Mov Cap-2 Maneuver - - - - - - 175 190 - 173 194 - Stage 1 - - - - - - 373 391 - 697 622 - Stage 2 - - - - - - 650 609 - 363 388 - Approach EB WB NB SB HCM Control Delay, s 0.3 1.8 16.2 33.2 HCM LOS C D Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h)333 1353 - - 861 - - 197 HCM Lane V/C Ratio 0.036 0.02 - - 0.059 - - 0.359 HCM Control Delay (s) 16.2 7.7 - - 9.4 0 - 33.2 HCM Lane LOS C A - - A A - D HCM 95th %tile Q(veh) 0.1 0.1 - - 0.2 - - 1.5 HCM 2010 TWSC 7: 44th Street & I-405 SB Off Ramp 03/12/2020 Baseline Synchro 9 Report Page 3 Intersection Int Delay, s/veh 27.6 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 0 716 23 365 160 0 0 0 0 70 0 87 Future Vol, veh/h 0 716 23 365 160 0 0 0 0 70 0 87 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - 130 - - - - - - - 120 Veh in Median Storage, # - 0 - - 0 - - - - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 0 778 25 397 174 0 0 0 0 76 0 95 Major/Minor Major1 Major2 Minor2 Conflicting Flow All - 0 0 803 0 0 1759 1771 174 Stage 1 - - - - - -968 968 - Stage 2 - - - - - -791 803 - Critical Hdwy - - - 4.12 - -6.42 6.52 6.22 Critical Hdwy Stg 1 - - - - - -5.42 5.52 - Critical Hdwy Stg 2 - - - - - -5.42 5.52 - Follow-up Hdwy - - - 2.218 - -3.518 4.018 3.318 Pot Cap-1 Maneuver 0 - - 821 - 0 93 83 869 Stage 1 0 - - - - 0 368 332 - Stage 2 0 - - - - 0 447 396 - Platoon blocked, %- -- Mov Cap-1 Maneuver - - - 821 - -~ 48 0 869 Mov Cap-2 Maneuver - - - - - -~ 48 0 - Stage 1 - - - - - -368 0 - Stage 2 - - - - - -231 0 - Approach EB WB SB HCM Control Delay, s 0 9.3 218.4 HCM LOS F Minor Lane/Major Mvmt EBT EBR WBL WBT SBLn1 SBLn2 Capacity (veh/h)- - 821 - 48 869 HCM Lane V/C Ratio - - 0.483 - 1.585 0.109 HCM Control Delay (s) - - 13.4 -$ 477.8 9.6 HCM Lane LOS - - B - F A HCM 95th %tile Q(veh) - - 2.7 - 7.4 0.4 Notes ~: Volume exceeds capacity $: Delay exceeds 300s +: Computation Not Defined *: All major volume in platoon HCM 2010 AWSC 1: I-405 NB Off Ramp/Lake Washington Blvd & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Intersection Delay, s/veh 78 Intersection LOS F Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 146 157 483 285 168 45 27 55 105 40 35 331 Future Vol, veh/h 146 157 483 285 168 45 27 55 105 40 35 331 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 Heavy Vehicles, %2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 159 171 525 310 183 49 29 60 114 43 38 360 Number of Lanes 0 1 1 1 1 1 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 3 2 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 2 3 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 3 2 HCM Control Delay 118.2 31.4 22.8 82.6 HCM LOS F D C F Lane NBLn1 EBLn1 EBLn2 WBLn1 WBLn2 WBLn3 SBLn1 Vol Left, %14% 48% 0% 100% 0% 0% 10% Vol Thru, %29% 52% 0% 0% 100% 0% 9% Vol Right, %56% 0% 100% 0% 0% 100% 82% Sign Control Stop Stop Stop Stop Stop Stop Stop Traffic Vol by Lane 187 303 483 285 168 45 406 LT Vol 27 146 0 285 0 0 40 Through Vol 55 157 0 0 168 0 35 RT Vol 105 0 483 0 0 45 331 Lane Flow Rate 203 329 525 310 183 49 441 Geometry Grp 7 8 8 7 7 7 7 Degree of Util (X)0.527 0.875 1.251 0.8 0.446 0.11 1.031 Departure Headway (Hd)9.77 9.968 8.973 9.701 9.177 8.443 8.757 Convergence, Y/N Yes Yes Yes Yes Yes Yes Yes Cap 372 366 410 375 394 427 419 Service Time 7.47 7.668 6.673 7.401 6.877 6.143 6.457 HCM Lane V/C Ratio 0.546 0.899 1.28 0.827 0.464 0.115 1.053 HCM Control Delay 22.8 53.2 158.9 41.7 19.1 12.2 82.6 HCM Lane LOS C F F E C B F HCM 95th-tile Q 2.9 8.4 21.4 6.9 2.2 0.4 13.4 HCM 2010 TWSC 3: 44th Street & 43rd St 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Int Delay, s/veh 1.5 Movement SEL SER NEL NET SWT SWR Lane Configurations Traffic Vol, veh/h 25 30 50 217 508 50 Future Vol, veh/h 25 30 50 217 508 50 Conflicting Peds, #/hr 0 0 0 0 0 0 Sign Control Stop Stop Free Free Free Free RT Channelized - None - None - None Storage Length 0 - - - - - Veh in Median Storage, # 0 - - 0 0 - Grade, %0 - - 0 0 - Peak Hour Factor 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 Mvmt Flow 27 33 54 236 552 54 Major/Minor Minor2 Major1 Major2 Conflicting Flow All 923 579 606 0 - 0 Stage 1 579 - - - - - Stage 2 344 - - - - - Critical Hdwy 6.42 6.22 4.12 - - - Critical Hdwy Stg 1 5.42 - - - - - Critical Hdwy Stg 2 5.42 - - - - - Follow-up Hdwy 3.518 3.318 2.218 - - - Pot Cap-1 Maneuver 299 515 972 - - - Stage 1 560 - - - - - Stage 2 718 - - - - - Platoon blocked, %- - - Mov Cap-1 Maneuver 280 515 972 - - - Mov Cap-2 Maneuver 280 - - - - - Stage 1 524 - - - - - Stage 2 718 - - - - - Approach SE NE SW HCM Control Delay, s 16.5 1.7 0 HCM LOS C Minor Lane/Major Mvmt NEL NET SELn1 SWT SWR Capacity (veh/h)972 - 373 - - HCM Lane V/C Ratio 0.056 - 0.16 - - HCM Control Delay (s) 8.9 0 16.5 - - HCM Lane LOS A A C - - HCM 95th %tile Q(veh) 0.2 - 0.6 - - HCM 2010 TWSC 5: Site Drwy/Seahawks Way & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 2 Intersection Int Delay, s/veh 3 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 20 220 2 11 530 65 8 0 43 60 0 20 Future Vol, veh/h 20 220 2 11 530 65 8 0 43 60 0 20 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length 75 - - - - - - - - - - - Veh in Median Storage, # - 0 - - 0 - - 0 - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 22 239 2 12 576 71 9 0 47 65 0 22 Major/Minor Major1 Major2 Minor1 Minor2 Conflicting Flow All 647 0 0 241 0 0 931 955 240 944 921 612 Stage 1 - - - - - - 284 284 - 636 636 - Stage 2 - - - - - - 647 671 - 308 285 - Critical Hdwy 4.12 - - 4.12 - - 7.12 6.52 6.22 7.12 6.52 6.22 Critical Hdwy Stg 1 - - - - - - 6.12 5.52 - 6.12 5.52 - Critical Hdwy Stg 2 - - - - - - 6.12 5.52 - 6.12 5.52 - Follow-up Hdwy 2.218 - - 2.218 - - 3.518 4.018 3.318 3.518 4.018 3.318 Pot Cap-1 Maneuver 939 - - 1326 - - 247 258 799 242 270 493 Stage 1 - - - - - - 723 676 - 466 472 - Stage 2 - - - - - - 460 455 - 702 676 - Platoon blocked, %- -- - Mov Cap-1 Maneuver 939 - - 1326 - - 229 248 799 221 260 493 Mov Cap-2 Maneuver - - - - - - 229 248 - 221 260 - Stage 1 - - - - - - 706 660 - 455 465 - Stage 2 - - - - - - 434 449 - 645 660 - Approach EB WB NB SB HCM Control Delay, s 0.7 0.1 11.9 26.1 HCM LOS B D Minor Lane/Major Mvmt NBLn1 EBL EBT EBR WBL WBT WBR SBLn1 Capacity (veh/h)575 939 - - 1326 - - 256 HCM Lane V/C Ratio 0.096 0.023 - - 0.009 - - 0.34 HCM Control Delay (s) 11.9 8.9 - - 7.7 0 - 26.1 HCM Lane LOS B A - - A A - D HCM 95th %tile Q(veh) 0.3 0.1 - - 0 - - 1.4 HCM 2010 TWSC 7: 44th Street & I-405 SB Off Ramp 03/12/2020 Baseline Synchro 9 Report Page 3 Intersection Int Delay, s/veh 13.6 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 0 278 45 335 417 0 0 0 0 55 25 189 Future Vol, veh/h 0 278 45 335 417 0 0 0 0 55 25 189 Conflicting Peds, #/hr 0 0 0 0 0 0 0 0 0 0 0 0 Sign Control Free Free Free Free Free Free Stop Stop Stop Stop Stop Stop RT Channelized - - None - - None - - None - - None Storage Length - - - 130 - - - - - - - 120 Veh in Median Storage, # - 0 - - 0 - - - - - 0 - Grade, %- 0 - - 0 - - 0 - - 0 - Peak Hour Factor 92 92 92 92 92 92 92 92 92 92 92 92 Heavy Vehicles, % 2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 0 302 49 364 453 0 0 0 0 60 27 205 Major/Minor Major1 Major2 Minor2 Conflicting Flow All - 0 0 351 0 0 1508 1532 453 Stage 1 - - - - - -1181 1181 - Stage 2 - - - - - -327 351 - Critical Hdwy - - - 4.12 - -6.42 6.52 6.22 Critical Hdwy Stg 1 - - - - - -5.42 5.52 - Critical Hdwy Stg 2 - - - - - -5.42 5.52 - Follow-up Hdwy - - - 2.218 - -3.518 4.018 3.318 Pot Cap-1 Maneuver 0 - - 1208 - 0 133 117 607 Stage 1 0 - - - - 0 291 264 - Stage 2 0 - - - - 0 731 632 - Platoon blocked, %- -- Mov Cap-1 Maneuver - - - 1208 - -93 0 607 Mov Cap-2 Maneuver - - - - - -93 0 - Stage 1 - - - - - -291 0 - Stage 2 - - - - - -511 0 - Approach EB WB SB HCM Control Delay, s 0 4.1 56.6 HCM LOS F Minor Lane/Major Mvmt EBT EBR WBL WBT SBLn1 SBLn2 Capacity (veh/h)- - 1208 - 93 607 HCM Lane V/C Ratio - - 0.301 - 0.935 0.338 HCM Control Delay (s) - - 9.3 - 157.5 13.9 HCM Lane LOS - - A - F B HCM 95th %tile Q(veh) - - 1.3 - 5.3 1.5 HCM 2010 AWSC 1: I-405 NB Off Ramp/Lake Washington Blvd & 44th Street 03/12/2020 Baseline Synchro 9 Report Page 1 Intersection Intersection Delay, s/veh 169.2 Intersection LOS F Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Vol, veh/h 105 123 105 90 152 55 24 240 150 70 20 626 Future Vol, veh/h 105 123 105 90 152 55 24 240 150 70 20 626 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 Heavy Vehicles, %2 2 2 2 2 2 2 2 2 2 2 2 Mvmt Flow 114 134 114 98 165 60 26 261 163 76 22 680 Number of Lanes 0 1 1 1 1 1 0 1 0 0 1 0 Approach EB WB NB SB Opposing Approach WB EB SB NB Opposing Lanes 3 2 1 1 Conflicting Approach Left SB NB EB WB Conflicting Lanes Left 1 1 2 3 Conflicting Approach Right NB SB WB EB Conflicting Lanes Right 1 1 3 2 HCM Control Delay 29.3 19.1 83.5 346.1 HCM LOS D C F F Lane NBLn1 EBLn1 EBLn2 WBLn1 WBLn2 WBLn3 SBLn1 Vol Left, %6% 46% 0% 100% 0% 0% 10% Vol Thru, %58% 54% 0% 0% 100% 0% 3% Vol Right, %36% 0% 100% 0% 0% 100% 87% Sign Control Stop Stop Stop Stop Stop Stop Stop Traffic Vol by Lane 414 228 105 90 152 55 716 LT Vol 24 105 0 90 0 0 70 Through Vol 240 123 0 0 152 0 20 RT Vol 150 0 105 0 0 55 626 Lane Flow Rate 450 248 114 98 165 60 778 Geometry Grp 7 8 8 7 7 7 7 Degree of Util (X)1.022 0.67 0.279 0.264 0.423 0.141 1.704 Departure Headway (Hd)9.512 11.541 10.537 11.411 10.879 10.134 8.087 Convergence, Y/N Yes Yes Yes Yes Yes Yes Yes Cap 387 315 344 317 334 356 459 Service Time 7.212 9.241 8.237 9.111 8.579 7.834 5.787 HCM Lane V/C Ratio 1.163 0.787 0.331 0.309 0.494 0.169 1.695 HCM Control Delay 83.5 34.8 17.3 18.2 21.3 14.5 346.1 HCM Lane LOS F D C C C B F HCM 95th-tile Q 12.6 4.5 1.1 1 2 0.5 45.4