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HomeMy WebLinkAboutStudies APPLICANT 8/10/2010 (3) II II I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY FOR East Side Baptist Church Springfield, Oregon August 10, 2009 Prepared For: East Side Baptist Church 4045 Commercial Avenue Springfield, Oregon 97478 Prepared By: BRANCH ENGINEERING, INC. 310 Fifth Street Springfield, Oregon 97477 Phone (541) 746-0637 Fax (541) 746-0389 Project No. 09-077 A Date Received: AUG 1 0 2010 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY FOR East Side Baptist Church Springfield, Oregon August10,2009 Prepared Bv: EXPIRES: JUNE 30, 2011 BRANCH ENGINEERING, INC. 310 Fifth Street Springfield, Oregon 97477 Phone (541) 746-0637 Fax (541) 746-0389 Date Received: Project No. 09-077 A AU6 1 0 2010 Original Submittal I. I I . II I I I I I I I I I I I I . I TABLE OF CONTENTS 1. INTRODUCTION...................................................................................1 2. PROJECT DESCRIPTION ....................................................................2 Parking Analysis......................... ........ ... ........ ........... ................. ......3 Site Access........................ ... ........ ..... ... ................ ... ...... ..................3 3. EXISTING CONDITIONS ......................................................................5 Roadway Network. ............... ........ .............. .............. .................... ...5 Intersections.... .......... .......... ... ........ ... ................... ... ... ... '" ...... .........5 Crash Analysis ....... ............. ............. ........... ........... ... ......................5 Transit Facilities ......... ........................ ... ................... ............ ...........6 Non-motorized Facilities.................................................................. 6 Existing Traffic Volumes .................................................................6 4. PROJECT TRAFFIC .............................................................................8 Trip Generation .......... ..... ... ................ ... ........ ... ... ... ...... '" ... ........ ....8 Traffic Assignment......... ................................... ... ... ............ ... ..........8 Trip Distribution .. ..... ............. ... ..... ... ... ........ ............... .,. '" ................8 5. OPERATIONAL ANALYSIS ...............................................................11 6. INTERSECTION SIGHT DISTANCE ..................................................13 7. RECOMMENDATIONS AND CONCLUSION .....................................14 Date Received: \ AUG 1 0 2010 Original Submittal I I I I I II I I I I I I I I I I I I I I I LIST OF FIGURES Figure 1: Vicinity Map............................................................................ 2 Figure 2: Site Plan ................................................................................4 Figure 3: Existing Year 2009 Traffic Volumes (Sunday Peak Hour)...... 7 Figure 4: Assignment of Site Generated Traffic .................................... 9 Figure 5: Future Year 2009 'Build' (Sunday Peak Hour) .....................10 LIST OF TABLES Table 1 : Table 2: Table 3: Table 4: Table 5: Roadway Network .............. ..... ... ... ... ... ........... ... ... ...................5 Level of Service Criteria ........................................................ 11 Intersection Performance Calculations.................................. 12 Queuing Calculations ............................................................ 12 Intersection Sight Distance Evaluation.................................. 13 LIST OF APPENDICES Appendix A: City of Springfield Traffic Impact Analysis Scoping Checklist Appendix B: ODOT Crash Data Appendix C: Traffic Count Summaries Appendix D: Intersection Performance Calculations Appendix E: Photograph of Studied Intersection and Intersection Sight Distance Table Date Received: AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 1 OF 14 1. INTRODUCTION Branch Engineering Inc. has been retained by East Side Baptist Church in Springfield to prepare this Minor Traffic Impact Study as required in Springfield Development Code to meet the criteria of Springfield Public Works Department policy S.O.P.P. #T-6.l and the Traffic Impact Study Scope of Work, dated July 9, 2009 (see Appendix A), prepared by City of Springfield Transportation staff for proposed East Side Baptist Church in Springfield, Oregon. A reduced traffic study has been allowed for this project, as there will not be significant new traffic generated by the improved worship center. The primary focus of this study is to summarize expected changes to local traffic patterns. Date Received: AUG 1 0 2010 Original Submittal i@ Branch Engineering, Inc. August 10, 2009 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 2 OF 14 2. PROJECT DESCRIPTION The proposed East Side Baptist Church is located south of Commercial Avenue, north west of 41 st Street in Springfield. The project consists of a proposed new building (Worship Center) and improved parking facilities. The church currently has a total of 155 member families, and there is currently a total of 125 regularly attending families. The property is identified on Assessor's Map 17-02-31-1-4, Tax Lot 4000. The site is currently occupied by East Side Baptist Church. The proposed new building size is 11,480 square feet and the new parking area includes 102 spaces. Construction is expected to begin late in the year of 2009. Figure I illustrates the location of the proposed development. FIGURE 1: Vicinity Map Date Received: AUG 1 0 2010 =r@ Branch Enginccring, Inc. Original Submittal August 10, 2009 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 3 OF 14 Parking Analysis There is a total of 68 parking spaces at the existing East Side Baptist Church in Springfield. Although the site has adequate parking supply for the typical church demand during regular worships, there is a nearby parking area across the street that is available for overflow parking during large events. No vehicle activity was observed in the overflow parking area during regular Sunday services. No bicycle traffic was observed at the church at the observed services. A new parking area is proposed to be constructed for visitors and staff parking on the southeast portion of the site. This new parking facility includes 102 spaces with four accessible spaces. Site Access There are two existing driveways on Commercial Avenue. As proposed, a new full-movement driveway will be constructed on 41 5t Street to access the new parking area. The proposed site plan is shown in Figure 2. Date Received: AUG 1 0 2010 -iQ~l-Braneh Engineering, Inc. Original Submittal August 10, 2009 k, TAX MAP 17-<>2-31-1.... TAX LOT 4000 SITE ACCESSES ~ ~ - _ ___ _~- ~?~-=- -:::~-:= - --_=_~- - ;M~E~CIAL _A~N~~ 1; '~ ~J! \~. ~.- ( EXISTING CHURCH BUILDINGS EXlSTING ie . o .'- e ~, Ie . _i ~ t+t+tH la . SITE PLAN FOR EAST SIDE BAPTIST CHURCH PROPOSED PEDESTRIAN ACCESS J ------ -- .-- '1 /;-- - --- ----------------- - - -- ~ @ rjmmut ........ .......... ...... ............ .............. ... .......u l 8 .... [:j ~ tI) !i; - ... ,. PROPOSED 11 ,480 s.l. WORSHIP CENTER PROPOSED VEHICLE ACCESS .~ ( . --. . .---- - . --:--.T..-.~.- '::~~-:::':: ~ ~::::::::::::::: ~ ~ ~::::::::::::::: ~ ~ ~ ~ ~: i.- . , >I i<>> . .{;:1\ ",:.~. . '. la i,. . . Date Received: ~ AUG 1 0 2010 " Original Submittal _IICALE 40 ~ 80 I FIGURE 2 ~- -- ,. I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 5 OF 14 3. EXISTING CONDITIONS Roadway Network The relevant roadways for this study are: .:. Commercial Avenue .:. 41st Street The following table shows the characteristics of the roadways mentioned above: -- -- - TABLE 1: Roadway Network , , . Roadway Classification Travel Sidewalks Bike On-Street Posted Speed Lanes Lanes parking Commercial Minor arterial 2 None None None 35 MPH A venue 41" Street Local Road 2 Yes None Yes 25 MPH Intersections With City concurrence, the following intersections were evaluated under the existing conditions scenano: .:. Commercial Avenue at 41st Street .:. Proposed New Site Access at 41 sl Street Both of the above intersections were evaluated as two-way stop controlled. Crash Analysis An analysis of crash history was performed for the relevant existing roadways. The most recent three full years of accident data was evaluated (January 1, 2006 through December 31, 2008) as supplied by the ODOT Crash Analysis and Reporting Unit. It should be noted, that Legislative changes to DMV's vehicle crash reporting requirements, effective January I, 2004, resulted in fewer property damage only crashes being eligible for inclusion in the statewide crash data file. Date Received: AUG 1 0 2010 [~I Branch EngillCcring, Inc. ~ 01 iyil'AL~S~{"11t,a~UU9 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 6 OF 14 During the period of analysis, there were no crashes reported at the Commercial A venue/41 5t Street intersection. The ODOT accident data is included as Appendix B. Transit Facilities Currently, the nearest bus stops are located approximately one-quarter of one-mile south of the proposed development at the Main Street and 42nd Street intersection, and are served frequently by route 11. Non-Motorized Facilities There are no existing bicycles lanes or sidewalks on Commercial A venue and it is not expected to have exclusive pedestrianlbicycle facilities. 41 5t Street has intermittent sidewalks. Existing Traffic Volumes Existing Average Daily Traffic (ADT) volumes were obtained from the most recent City of Springfield Traffic Flow Map. Traffic counts are based on typical weekday 24 hour counts. The ADT in the project vicinity is as follows: Roadwav Commercial Avenue 41st Street ACT 2,172 320 ADT for 41 5t Street was estimated to be ten times existing peak hour traffic volumes, as no existing published ADT data was available. Existing peak hour traffic volumes were determined by manual traffic counts conducted by Branch Engineering staff in July and August, 2009 (see Appendix C). The counts were taken between 1 0:30AM and 12:30PM on a Sunday covering an entire peak service. The observed traffic volumes are shown in Figure 3. Date Received: AUG 1 0 2010 Original Submittal ~ Branch Eng~neering, Inc. ~ August 10, 2009 II I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 7 OF 14 EXISTING YEAR 2009 TRAFFIC VOLUMES (SUNDA Y PEAK HOUR OF GENERA TOR) "" \ ; ) " ~k"\' ,\ Ar'J COMMERCIAL A VENUE "" \0\ ) , , ;-"'#'"'\' , "t ,,' , )\ , " -'" #'"'\ , \" " ,,0 '- ~ '- en J I -.- '- en '" " \' /' t' N.T.S. FIGUHE 3 -a ,~ Braneh Engineering, Ine. ~ ... . AUG 1 0 2010 August 10, 2009 Original Submittal I I 'I I ,I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 8 OF 14 4. PROJECT TRAFFIC Trip Generation Peak hour trip generation values will not change significantly as a result of the proposed development and improved parking facilities. However, over time it is expected that membership will increase as a result of the larger and improved facilities. Therefore, it was conservatively assumed that the proposed parking lot was full, and all vehicles would enter and leave during the same peak hour, resulting in 102 entering and 102 vehicles exiting at the 4151 Street Access. This simultaneous arrival/departure is not expected to occur; rather it was used as a simplified conservative operational analysis. Trip Distribution The site generated traffic is expected to continue to disburse onto the public roadway system in the same proportion as the existing conditions. The existing attendees were observed to directionally distribute to/from the north and south roughly equally. When reviewing church member addresses, it was confirmed that roughly 50 percent of site generated traffic would have origins/destinations to the north and 50 percent would be to/from the south. Traffic Assignment The site generated traffic was distributed to the adjacent road system and assigned to specific movements at the relevant intersections based on the above trip distribution assumptions, and existing operational characteristics in the project vicinity. Figures 4 and 5 illustrate the assignment site generated traffic and the year 2009 'Build' traffic volumes, respectively. Date Received: AUG 1 0 2010 Original Submittal :~ Branch Engineering, Inc. ~ August 10, 2009 I I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 9 OF 14 COMMERCIAL A" ,ENUE j 'I + In,. i@lBranch Engineering, Inc. ASSIGNMENT OF SITE GENERATED TRAFFIC 1~ ) , 1~ , "'''' ~ ~, >- tJ Q: >- 0) >- 0) '" FIGUUE 1 ~, ~ , ~, ~, ~, vt...... August 10, 2009 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 10 OF 14 FUTUNE TNAFFIC VOLUMES YEAR 2009 'BUILD' (SUNDA Y PEAK HOUR OF GENERA TOR) II I I COMMERCIAL A VENUE b' ~" \ ) , ~b bb/"loT\. '\ ,,1 ,,~ ~ '" CJ e: U) ~ U) ~ '\' '\' "-JII........ " JI' ~, ) , ~, .l' ~, J I -.- Date Received: S.T.S. FIGURE [j AUG t 0 2 Original Submittal =~ Branch Engineering, Inc. ~ August 10, 2009 II I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 11 OF 14 5. OPERATIONAL ANALYSIS To satisfy the City of Springfield standards, intersection performance was evaluated to determine Level of Service (LOS) based on delay. Calculations for the unsignalized intersections were performed with the computer program SYNCHRO 7, by Trafficware. Level of service, based on vehicle delay, is classified by a letter scale from 'A' to 'F'. LOS 'A' represents optimum operating conditions and minimal delay. LOS 'F' indicates over capacity conditions causing unacceptable delay. LOS 'D' is considered the minimum acceptable level of service by the City of Springfield. Mitigation measures are often necessary when the level of service is reduced below 'D' as a result of a development. The LOS determined by average delay per vehicle as established in the Highwav Caoacitv Manual. 2000 (HCM) is as follows: I TABLE 2: Level of Service Criteria Level of Service Unsignalized A < 10 see B >10 and ~ 15 see C >15 and~25 see D >25 and ~ 35 see E >35 and ~ 50 see F > 50 see Vehicle queue calculations were performed for the Commercial Avenue/41st Street and Proposed New Site Access/4l st Street intersections. The intersection performance analysis and queuing calculations are documented in Appendix D, and the results are summarized in the following tables: Date Received: AUG 1 0 2010 :/'1i?'\~ranch Engincering, Inc. ~ Original Submittal August 10, 2009 ~ --- II MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 12 OF 14 I i I I I I I I I I I I I I I I I I I -- - - TABLE 3: Intersection Performance Calculations (Sunday Peak Hour) 2009 2009 'Existing' 'Build' INTERSECTION IMOVEMENT LOS LOS Commercial Avenue at 41" Street Northbound Approach A A Westbound Left A A Proposed New Site Access at 41" Street Northbound Left nla A Eastbound Approach nla A - - I TABLE 4: Queuing Calculations I (Sunday Peak Hour) 2009 2009 'Existing' 'Build' INTERSECTION IMOVEMENT Available 95% 95% Storage (ft) Queue (ft) Queue (ft) Commercial Avenue at 41" Street Northbound Approach 100+ 2 10 Proposed New Site Access at 41" Street 2 Northbound Left 25 nla Eastbound Approach 50 nla 11 All applicable 95th percentile queue lengths were calculated to be reasonable and the projected traffic was not found to significantly increase queuing. Queues at the Commercial Avenue/41st Street intersection will not exceed available storage area between the stop sign and the proposed driveway location; therefore, the new proposed driveway at 41 sl Street is not expected to significantly interfere with the Commercial A venue Intersection. Date Received: AUG 1 0 2010 -:@ Branch Engineering, Inc. 0, ;gil .8\ S\l~~~~~11 0, 2009 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 13 OF 14 6. INTERSECTION SIGHT DISTANCE Minimum safe intersection sight distance is the distance traversed by opposing vehicles at the design speed of the major road in the travel time needed for a departing side street vehicle to perceive a gap in traffic, accelerate from a stop, clear the opposing travel lane(s), and accelerate without being overtaken by vehicles already on the major street. As recommended by AASHTO, the vantage point for departure was considered to be 14.5 feet from the edge of the vehicle travel way. The driver's eye and the object height were both assumed to be 3.5 feet above the roadway surface. Site distances measured in the field were compared to the minimum stopping sight distance recommended by the American Association of State Highway and Transportation Official's manual, A Policv on Geometric Design of Highwavs and Street, 2004. The proposed site access location is near a horizontal curve in 41 st Street, and therefore was evaluated to determine if the existing available line of sight is adequate to serve vehicles entering the roadway at the subject new driveway location. Per Exhibit 9-55 in the referenced document, the minimum recommended intersection sight distance in a 25MPH zone for a passenger car to safely depart from this intersection is 280 feet for an exiting left turn (when looking to the right). The measured available line of sight exceeded the recommended distance when looking right. The following table summarizes the available measured line of sight, and lists the recommended minimum sight distance: - - - - - TABLE 5: Intersection Sight Distance Evaluation - - - Intersection/Movement Available Distance Recommended Sight Line of Sight Distance 41" Street/Site Access Eastbound Left 300+ ft 280 ft A photograph from the driver's vantage point at the studied intersection, demonstrating the existing available line of sight, and the referenced AASHTO Intersection Sight Distance Table a[9ayscPf~BEflved: information in Appendix E. AUG 1 0 2010 \~~ancll Engir~cring, Inc. ~ Or~iR:il1 S'Ibmitt,,1 ugust 10, 2009 I I I I I I I I I I I I I I I I I I I MINOR TRAFFIC IMPACT STUDY: EAST SIDE BAPTIST CHURCH PAGE 14 OF 14 7. RECOMMENDATIONS AND CONCLUSION Transit Facilities The site is adequately served by public transit. Non-Motorized Facilities Due to the nature of travel modes utilizing churches, no special pedestrian or bicycle facilities (other than code requirements) are necessary for the proposed expansion. Crash Analysis During the period of analysis, there were no crashes reported at the Commercial A venue/41 sl Street intersection. No crash reducing measures are necessary to accommodate the proposed development. Operational Analysis All studied intersections are projected to operate at acceptable levels of service through the planned build-out year of2009. All applicable 95th percentile queue lengths were calculated to be reasonable and the new proposed development was not found to significantly increase queuing or cause vehicles to significantly interfere with the operations of 41 st Street/Commercial A venue intersection. Intersection Sight Distance The left turn movement at the 41 sl Street and Site Access intersection was found to have adequate available sight distance. Site Access As requested in the scope, access point design was considered. The proposed width, depth (throat) were both considered reasonable and typical. Based on the sight distance, queuing, available gaps, and considering the result of potentially forcing all exiting vehicles on to 41s1 Street (a local residential roadway) a right-inlright-out only configuration of the proposed site access is not recommended. Conclusion In summary, the result ofthis analysis indicates, the proposed development will not cause significant adverse impact on the operating characteristics of the existing adjacent roadway system. Date Received: AUG 1 0 2010 Original Submittal -~, Branch Engineerill~, Inc. ~' 0 . August 10, 2009 I I I I I I I I I I I I I I I I I I I APPENDIX A CITY OF SPRJNGFIELD TRAFFIC IMPACT ANALYSIS SCOPING CHECKLIST Date Received: AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I TRAFFIC IMPACT STUDY SCOPE OF WORK Date: July 9, 2009 Consultant: Branch Engineering Proiect Description: Project Name: Location: Land Uses: Size: Access: Build Date: East Side Baptist Church, lON2009-00015 4045 Commercial St. ITE Code 560 - Church I 1,480 square feet addition Commercial St. and 4 I 51 Street Assume 2009 Study Requirements: General: Provide a Minor Traffic Impact Analysis (TlA) per Springfield Public Works Department policy S.O.P.P. #T-6.I. This assumes that phase I is the focus of the analysis and that future development, as depicted in latter phases will not occur within the next two years. The future phases will require individual land use applications and therefore, traffic impact analysis at that time. Project Description: Provide description of project including building size, parking stalls required, number of trips from ITE estimate, access points and any other transportation related special features. Existing Conditions: Include a description of the adjacent street network including lane configurations, median types, sidewalks, bike lanes, road signs, bus stops, geometry and traffic controls at the pertinent intersections; Commercial and 4 151 St. Also include any observations or conclusions that are pertinent to this study. Project Traffic: Project a worse case occupancy for the project after completion of the new building by examining current occupancy and applying this density to the entire facility or the ITE estimate, whichever is worse. With this data, extrapolate the trip distribution to the access points of the facility and consider the following: I) Sight distance at the proposed southerly driveway and with respect to CUOatH. if' ~~l\lj~d' Determine if the location of the driveway is placed in the optimal location wllh re~pecl to . the intersection on the east and curve in 4 I 51 to the west. AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I 2) Access point design: a) Width, depth (throat), configuration of possible right-in/right-oul. Include this Scope of Work in the appendix of the Tramc Impact Studv Date Received: AUG 1 0 2010 Original Submittal C \DoaImems and Setnngs\cindyp\l..ocal Settings\Te:rnporvy Inl~ Files\Comml Oullook\CZ7HlIKNY\TIS SCOPE EI.Sl. SMle &ptist Church- Brltldl Engineering doc Page 201"2 I I I I I I I I I I I I ! I I I I I I I I --- APPENDIX B ODOT CRASH DATA Date Received: AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I 1- Cindy From: Sent: To: Subject: Attachments: VOGEL Sylvia M [Sylvia.MVOGEL@odOl.state.or.us] Monday, July 27, 2009 7:32 PM Cindy@branchengineenng.com RE: Crash Data: East Springfield sv.pulone-commercialand41 sl. yr0507 _ CDS150.pdf Hi Cindy: Allached is the information you requested for the intersection of Commercial Street and 41 st Street for the period of January 1, 2005 through December 31, 2007. There were no crashes coded at that intersection for the requested time period. If you have any questions, please don't hesitate to contact me. Sincerely, SyMa Sylvia M. Vogel Crash Reporting Technician Crash Analysis And Reporting Unit Oregon Depl. of Transportation Transportation Data Section 555 13th Street NE, Suite 2 Salem, OR 97301-4178 (503) 986-4240 Fax: (503) 986-4249 svlvia. m.voQel@odol.state.or.us From: Cindy [mailto:Cindy@branchengineering.com] Sent: Wednesday, July 15, 2009 8:25 AM To: VOGEL Sylvia M; WARD Kimberlee S Subject: Crash Data: East Springfield Hello Sylvia/Kim, Please supply a crash history and summary for the most recent three full years at the following intersection in Springfield: . Commercial SI. and 41" Street Please do not hesitate to contact me with any questions. Thank you Date Received: Cindy Pulone Traffic Analyst Branch Engineering, Inc. 310 Fifth Street AUG 1 0 2010 Original Submittal 1 - - - CDS150 07/27/2009 COLLISION TYPE YEAR: TOTAL FINAL TOTAL - - - - - - - - DAY - - - - - - INTER- DARK SECTION Note: Legislative changes to DMVs vehide crash reporting requirements, effective 01/0112004, may result in fewer property damage only crashes being eligible for indusian in the Statewide Crash Data File. 0 ::!, CO 5' 0 !!!. I>> fI) >- - <: c::: CD r::T en ::0 3 - g = CD "-3 ~ = <' CS CD C. OREGON DEPARTMENT OF TRANSPORTATION - TRANSPORTATION DEVELOPMENT DIVISION TRANSPORTATION DATA SECTION - CRASH ANALYSIS AND REPORTING UNIT CRASH SUMMARIES BY YEAR BY COLLISION TYPE Commercial Street @ 41 st Street. City of Springfield January I, 2005 Through December 31, 2007 NON- FATAL FATAL CRASHES CRASHES PROPERTY DAMAGE ONLY DRY SURF WET SURF TOTAL PEOPLE PEOPLE CRASHES KILLED INJURED TRUCKS - - PAGE: 1 INTER- SECTION OFF- RELATED ROAD I I I I I I I I I I I I I I I I I I I APPENDIX c TRAFFIC COUNT SUMMAR.lEE Date Received: AUG 1 0 2010 Original Submittal - - - - - -- Branch Engineering, Inc. 310 5th Street Springfield, OR 97477 541-746-0637 Start Time '--Factor --'030-i'iM 10:45 AM .---total 11:00AM 11:15AM Grand Total Apprch % Total % Vehicles % ,{~!1j~~es Heavy Vehides ~H..vyV.l'ltdel Right 1.0 o 2 2 Southbound Thru Left Peds 1.0 1.0 1.0 18 0 0 19 0 0 37 0- 0 2 1 5 7.2 3.4 5 100 o o 19 8 64 92.8 43.8 63 98.4 1 1.6 o o o o o o o o o App, Tot,l o o o o o - - - - - 18 21 39 Right 1.0 o o o Westbound Thru Left Peds App. Tot.1 1.0 1.0 1.0 o 0 0 0 o 0 0 0 --0-.-0-----0----0 File Name Site Code Start Date Page No Grou 5 Printed- Vehicles - Hea Vehicles - - - - -- - : Commercial Avenue at 41 st Street (Sunday) : 00906702 : 8/2/2009 : 1 19 Right 1.0 6 3 9 Eastbound Thru Left Peds 1.0 1.0 1.0 o ., 0" 030 040 ~~~o~: _.~~~I~.T:j_~nl~~ 7 0 44 44 6 0 50 50 '-'3 -0 u94- -94 7 7 56 401 0 201 0 15 0 6 0 71.4 0 28.6 0 10.3 0 4.1 0 14.4 .'5-6----6--0---. 21 100 0 100 0 100 --0--- 0-.0-- 0- 0 o 0 0 0 0 5 3 21 o o o 33 33 19 19 146 146 ~ -. - -~_. ------ __U~_ -.- .. -. - --- J- __,_u_ -- ---- ~. u_ -- -- ] Southbound Westbound Northbound Eastbound -start Time '-Rigiiflthru I Len I App Tolal' Ri9I1!T!.h!!'~L.J.ft:CP~dslApp. Tolal ~igllt.J_ Thru [::::Ce~1 Peds LAep, Tolal f!!ghtl Th:"niI:_J,,,ft CF'.eqs TApP~T~"_ -",fTo!'!'] Peak Hour Analysis From 1 0:30 AM to 11 :15 AM - Peak 1 of 1 Peak Hour for Entire Intersection Begins at 1 0:30 AM 10:30 10:45 11:00 11:15 -fotaIVo- - % ~pp. 21 9 69 o 0 0 0 o 0 0 0 o 0 0 0 o 0 0 0 o 0 0 0 0-0-- -6----0. o 0 0 0 --0-' '-0--0- -0 o 0 0 0 o o o o --'0 o ---ii" o Right 1.0 o o --6 o o o o o --6 o --6 o o ---0 o o o 100 . -'-0 o -6- o '--'45- 99.3 .-..u1. 0.7 47.3 68 98.6 1 1.4 App. Tot.1 7 6 50 89.3 34.2 --50 100 --6 - o o 0 1 0 6 0 10.7 0 4.1 0 38.4 --6---6---56 100 0 100 -0--- 0-- -0'- o 0 0 AM 0 18 0 18 0 0 0 0 0 0 18 1 0 19 6 0 1 AM 2 19 0 21 0 0 0 0 0 0 19 4 0 23 3 0 3 AM 2 19 0 21 0 0 0 0 0 0 7 0 0 7 4 0 1 AM 1 8 0 9 0 0 0 0 0 0 6 1 0 7 2 0 1 lume --5 - 64---0-- --69 . 6 -. - 0 -6--- a .-- ---0 0 50 6 '--0.- 56 -15----6 6 Total 7.2 92.8 0 0 0 0 0 0 89.3 10.7 0 71.4 0 28.6 PHF .625 - .642 .000 .821 .000 .000 .000 .000 .000 .000 .658 .375 .000 .609 .625 .000 ,~.o .0 o o o o o o ~9-=--=J~9-___-_- .73( 7 6 5 3 '21- 44 50 33 19 146 - -- - - - - -- - -- - - - - - -- Branch Engineering, Inc. 310 5th Street Springfield, OR 97477 541-746-0637 Date Received: Original Submittal File Name Site Code Start Date Page No : Commercial Avenue at N Site Access Noon : 00907701 : 7/26/2009 : 1 AUG 1 0 2010 ----- - _ _ _t;3roup~ Prir.!~ed- V!-h!~e_s....:. .Hea~ Vehicles ---- Southbound Westbound Northbound Eastbound Start Tim-e R!~~Jr T~r6J.~Je&f3~A;'~";' -R~~Pi~-F-.L-"~~!",, Right Thru Left Peds App. TOIII Right . - ped[p;-~.~~ E:~~~;~~:~I~~t. -~~~J - - Factor . .1.Q.. ..1,Q.. _10 __LQ ___ 1.0 1.0 1.0 ---1,0 1.0 1.0 10:30 AM 0- ..--- 0 0 0 0 0 3 0 1 0 4 0 0 0 0 0 0 5 0 9 9 , 0:45 AM o 0 0 0 0 4 0 1 0 5 0 0 0 o 0 0 0 6 o 11 11 - ..... 'Totar - --0--0--0- 0 0 -7 --'0---2 0 9 0 0 0 0-0 0 0 11 -O--20~ 11:00AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:15AM 0 0 0 0 0 1 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 2 2 11:30AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11:45AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 - Total 0 0 -0 0 0 1 0 1 C 2 -0- 6 0 0 C 0 --0- 6- 0 0 0 i i 12:00 PM 0 0 0 0 0 1 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 2 2 12:15 PM 0 0 0 0 0 15 0 10 0 25 0 0 0 0 0 2 0 0 0 2 0 27 27 '2:30 PM 0 0 0 0 0 5 0 1 0 6 0 0 0 0 0 0 0 3 0 3 0 9 9 Grand Total 0 0 0 0 0 29 0 15 0 44 0 0 0 0 0 2 0 14 0 16 0 60 60 Apprch % 0 0 0 65.9 0 34.1 0 0 0 0 0 12.5 0 87.5 0 Total % 0 0 0 0 48.3 0 25 0 73.3 0 o 0 0 0 3.3 0 23.3 0 26.7 o 100 Vehicles 0 0 0 0 29 0 15- 6 -- 44 -0 -o--C---- 0 --C- 2 0 -'-'4--0- --'-6 -. -0----- 0 --60- % Vehicles 0 0 0 0 0 100 0 100 0 100 0 0 o 0 0 100 0 100 0 100 0 0 100 Heavy Vehicles 0 0 --C- O "0 0 0 0 0 -0 0 --6----6 ----6 --0-0- 0---0 6 6 0 -- "0- % HelVYVehicJe. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I - - --b-----------J---. --- Southbound Westbound :__- J>!a{!~m~_ Righ!rJhr~:CJ_e~...L App. Total ':"Ri9t1!LThru I. .__Leftl_feds L Apl',!olal __~gh.! Peak Hour Analysis From 10:30 AM to 11:15 AM.. Peak 1 of 1 Peak Hour for Entire Intersection Begins at 10:30 AM 10:30 A 10:45A 11:00A 11:15A TOlalVolum % App. Tot .- 'PH -------~~ Eastbound Right I Thru C I~:J -Peds L;;.p,;:ro'al oint total I M 0 0 0 0 3 0 1 0 4 0 0 0 0 0 0 0 5 0 5 9 M 0 0 0 0 4 0 1 0 6 0 0 0 0 0 0 0 6 0 6 11 M 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 M 0 0 0 0 1 0 1 0 2 0 0 0 0 0 0 0 0 0 0 2 e 0 0 0 0 8 0 3 0 11 0 0 0 0 0 0 0 11 0 11 22 al 0 0 0 72.7 0 27.3 0 0 0 0 0 0 0 100 0 F ,---,000 __.000---,-000 .000 .500 ,000 .750 .000 .550 .000 .000 .000 .000 .000 .000 .000 .458 .Q9.9 __ .458 ~_500- - -- - - - Branch Engineering, Inc. 310 5th Street Springfield, OR 97477 541-746-0637 - - - - - - - - - - Date Received: File Name Site Code Start Date Page No : Copy of Commercial Avenue at S Site Access Noon : 00907700 : 7/26/2009 : 1 AUG t 0 2010 Original Submittal __9roup_sJ)rinted:. Y~~icJf;)s -.tieavy .'~e~.i~!es __ ___ __ ~_____ _ _~___ ~ -~ -- --- - -- -- --- ----- - -- Southbound Westbound Northbound Eastbound :~ta_rt T(f!1~ R_i9f\I r Thrur ceft-r!~~~ Tot~1 ~jg~~FT~~~T=I~~ffP~~d. 5 r~ Tot.l. ._ Rj~~~.J~T~r_u~.I~- Left [~.pedS_ ~ ~~p~ !o~.~ _~ig~. ~j_.!hru [ L_~~ -f-~!~_S- f!:P;Tot'.'. Factor 1.0 ITLJ;:O 1.0 1.0 1.01 1.0 1.0 r .. 1.0 [1.0 1.0 1.0 1.0 1.0 1.0 1.01- 16:30-AM---.0---0- 6--0- 0 --2 ---0 -- 1--- O' 3 - -6 -6- -6---0- '0 -- 5- ---0 '2 -- 0 7 10:45 AM 0 0 0 0 0 1 0 3 0 4 0 0 0 0 0 4 0 2 0 6 Total 00- - "0"- --6 .-----0 3 0'- 4 0 7 0 0 0 0 0 9 -'0 4 0 13 11:00AM 0 0 0 0 0 11:15AM 0 0 0 0 0 11:30AM 0 0 0 0 0 11:45AM 0 0 0 0 0 Toial 0 6 0 0 ---0 12:00 PM 0 0 0 0 0 12:15 PM 0 0 0 0 0 12:30 PM 0 0 0 0 0 Grand Total 0 0 0 0 0 Apprch % 0 0 0 Total % 0 o 0 0 - Vehicles --6 --0- -0--- 0 _~~LVehi~~s 0 0 0 0 0 Heavy VehiCles 0 0 0 0 'l\, H..vyVellitle. 0 0 0 0 0 2 1 o o 3 42.9 .000 __ .375 - -- ~~-;-~~ l_~;~u. !~~F~!_o~.'~ o 10 10 o 10 10 o 20 26 0 0 0 0 0 0 0 0 -~--j~ 1 0 0 0 --.i ~- 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 _h 0 0 0 0 0 0 000 0 0 6- 0 0 --0 '0 -0 0 -0 o 0 -, -0--0---0 -0' ----1- 0 0 0 0 0 0 0 0 0 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 0 10 0 4 0 14 0 0 0 0 0 71.4 0 28.6 0 o 56.2 o 0 0 0 o ~!l..._..J1.....J~_..Q... _ 43!l --------c7.C -0"-.0 0 0 . o 18 o 10 0 4 0 14 0 100 0 0 0 0 0 100 0 100 0 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o 0 0 504 o 0 2 8 0 10 44.4 0 55.6 25 0 31.2 ------s----o- TO 100 0 100 o 0 6 o 0 0 Northbound . Total Right Thru Left Peds ~ Eastbound Right __ Thru I - LeJtJyedu..A.!>_Tolal _Int. Iotal/ 1 0 3 0 0 0 0 0 5 0 3 0 4 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 4 0 7 0 0 0 0 0 10 0 7.1 0 0 0 0 0 71.4 0 28. ~~3_..-.Q.00___..:!3~. _,QOO___J)OL~90L .0011...__ .000_ ~5QL__'OOO_ .50 o o o o o o 5 .000 . --- 1 o o o -T o o o o o 0 9 9 2 2 32 32 I----~ Southbound Westbound -~~-_Startrime Rig~ -_T.t!riJT- LeftIAPE::IO-'!1 --B!g!1tJ-thru ~-[e1t Peds Peak Hour Analysis From 10:30 AM to 11:15 AM - Peak 1 of 1 Peak Hour for Entire Intersection Begins at 10:30 AM 10:30 AM 0 0 0 0 10:45AM 0 0 0 0 11:00AM 0 0 0 0 11:15AM 0 0 0 0 ---tCiial VOiume 0 0 0 0 __ % !-R20 Total 0 0 0 _m__ _f'H~ _.o.09___~o.O_0_~Q<l. o --0 o 6 o 100 - --0--- o o o 32- 100 -00-0 o 2 0 7 10 2 0 6 10 o 0 1 1 o 0 0 0 4 0 14 21 6 0 -0 -~ObO-- ~~O:_-.525 I I I I I I I I I I I I I I I I I I I APPENDIX o INTERSECTION PERFORMANCE CALCULATIONS Date Received: AUG t 0 2010 Original submittal I I I I I I I I I I I I '. I I I I I I Existing 2009 (Sunday Peak Hour) 3: Commercial Avenue & 41st Street 8/5/2009 lVIovemenl =. ..,>\, Lane Configurations Volume (vehlh) Sign Control Grade Peak Hour Faclor Hourly flow rate (vph) Pedestrians Lane Width (ft) Walking Speed (IUs) Percent Blockage Right turn flare (veh) Median type Median storage veh) Upstream signal (ft) pX, plaloon unblocked vC, conflicting volume vC1, stage 1 conf vol vC2, stage 2 coni vol vCu, unblocked vol IC, single (5) tC, 2 stage (5) tF (5) pO queue free % cM capacity (vehlh) lSireCliOO,1W#- . Volume Total Volume Left Volume Right cSH Volume 10 Capacity Queue Length 95th (ft) Control Delay (5) Lane LOS Approach Delay (5) Approach LOS -+ ..... - ~ ~ ~ EaT;-EB~BL""WBT:-NBL"""""i'rB'R. 1> 4' V 64 5 6 50 6 15 Free Free Stop 0% 0% 0% 0.92 0.92 0.92 0.92 0.92 0.92 70 5 7 54 7 16 .~ . _'~. {oO;.. ::;;\, ;f~ J',;r,. ; , None None 75 140 72 75 4.1 140 72 6.4 6.2 2.2 100 1524 'EB-j'.-WB-1~Bl . " ..... ..--'-. _.'"C'_',_' 75 61 23 o 7 7 5 0 16 1700 1524 945 0.04 0.00 0.02 002 0.0 0.8 8.9 A A 0.0 0.8 8.9 A 3.5 3.3 99 98 850 990 , .",...-.-:- - ,-.!........, ...... ~L Intersecllon Summary ,: . Average Delay Intersection Capacity Utilization Analysis Period (min) ~Jf".... ".. -,; --wa tl. ""'" I 1.6 18.3% 15 A ICU Level of Service Date Received: AUG 1 0 2010 Original Submittal Baseline %user _name% i L- Synchro 7 - Repcrt Page 1 I I I I I I I I I I I I I I I I I I I Build 2009 (Sunday Peak Hour) 3: Commercial Avenue & 41st Street 8/5/2009 : EBI"'"'""'EBR~W8t'"f; '''-F'~'',,_'..>_' .. .__ f> 64 Free 0% 0.92 70 tviovemen/l'~ '" Lane Configurations Volume (vehlh) Sign Control Grade Peak Hour Factor Hou~y flow rate (vph) Pedestrians Lane Width (It) Walking Speed (ftIs) Percent Blockage Right turn flare (veh) Median type Median storage veh) Upstream signal (It) pX, platoon unblocked vC, conflicting volume vC 1, stage 1 conI vol vC2, stage 2 conI vol vCu, unblocked vol tC, single (s) tC, 2 stage (s) tF (s) pO queue free % cM capacity (vehlh) Direction, Iantti Volume Total Volume Lelt Volume Right cSH Volume to Capacity Queue Length 95th (It) Control Delay (s) Lane LOS Approach Delay (s) Approach LOS ;I\II'!~_., Intersection-Summary Average Delay Intersection Capacity Utilization Analysis Period (min) - '). 25 0.92 27 0.92 62 None of - .... WBf~{< NBL <f V 50 26 Free Stop 0% 0% 0.92 0.92 54 28 57 None 97 97 4.1 2.2 96 1497 l:B-r:-:wEl''':--"N!l'"j- ... .... 97 116 100 o 62 28 27 0 72 1700 1497 877 0.06 0.04 0.11 o 3 10 0.0 4.2 9.6 A A 4.2 9.6 A 0.0 ,;;;;j __y,?,,~:t\."' 4.6 25.6% 15 261 261 6.4 3.5 96 697 - .. ". "NBRIlI;'~/ij;q.~~,: N~~ _. .. .,. .'. _.~. " 'lZ~-e. 66 0.92 72 83 83 62 33 93 976 .( ~1 L.. ~ ..-., --..~. , ICU Level 01 Service A Date Received: AUG 1 0 2010 Original submittal Baseline %user _name% Synchro 7. Report Page 1 I I I I I I I I I I I I I I I I I I I Existing 2009 (Sunday Peak Hour) 5: Site Access & 41st Street 815/2009 MOVement 0 . Lane Configurations Volume (vehlh) Sign Control Grade Peak Hour Factor Hourly flow rate (vph) Pedestrians Lane Width (ft) Walking Speed (IUs) Percent Blockage Right turn nare (veh) Median type Median storage veh) Upstream signal (ft) pX, platoon unblocked vC, connicting volume vC1, stage 1 confvol vC2, stage 2 conf vol vCu, unblocked vol tC, single (s) tC, 2 stage (s) tF (s) pO queue free % cM capacity (vehlh) Dlrectl~ane# Volume Total Volume Len Volume Right cSH Volume to Capacity Queue Length 95th (ft) Control Delay (s) Lane LOS Approach Delay (s) Approach LOS intersecbOri'summary ." Average Delay Intersection Capacity Utilization Analysis Period (min) .-J. l- ~ t ~ ./ ....~BL . ~BR frBr--'NBT- "'SBT-= $1;: ., ---...-... J ,. ,.-. ... .::.6.>.'lC;")~:;;".- V +f t- O 0 0 21 11 0 Slop Free Free 0% 0% 0% 0.92 0.92 0.92 0.92 0.92 0.92 0 0 0 23 12 0 None None r:\l 35 12 12 35 12 12 6.4 6.2 4.1 3.5 3.3 2.2 100 100 100 978 1069 1607 EBL . NS'-SB"f"- - 0 23 12 0 0 0 0 0 0 1700 1607 1700 0.00 0.00 0.01 0 0 0 0.0 0.0 0.0 A 0.0 0.0 00 A - -~ - '.,.' ... . .....1 ~,"--' -- o. ,,~" . ,'-'-"'"", ~ . 0.0 6.7% 15 ICU Level of Service A Date Received: AUG 1 0 2010 Original Submittal Baseline %user _name% Synchro 7 - Report Page 1 I I I I I I I I I I I I I II I I I I I I Build 2009 (Sunday Peak Hour) 5: Site Access & 41st Street 8/5/2009 ~ t + .; .. '\ Movemen.t":~<~~~_,,:;. Lane Configurations Volume (vehlh) Sign Control Grade Peak Hour Factor Hourty flow rate (vph) Pedestrians Lane Width (ft) Walking Speed (fils) Percent Blockage Right turn flare (veh) Median type Median storage veh) Upstream signal (ft) pX, platoon unblocked vC, conflicting volume vC 1, stage 1 cont vol vC2, stage 2 cont vol vCu, unblocked vol tC, single (s) tC, 2 stage (s) tF (s) pO queue free % cM capacity (vehlh) Direcbbn, Eane#. . Volume Total Volume Left Volume Right cSH Volume to Capacity Queue Length 95th (ft) Control Delay (s) Lane LOS Approach Delay (s) Approach LOS inlersectioO:Summary''i':" . -. Average Delay Intersection Capacity Utilization Analysis Period (min) '. ~c:EBr---EBR~'., NBL"'.~NBT~SBT-SB~... V 4' t+ 71 31 31 21 11 Stop Free Free 0% 0% 0% 0.92 0.92 0.92 0.92 0.92 n ~ ~ ~ 12 ~~~ ~ ~ .~ -.' - ;, ~".- 71 0.92 n None None 141 51 89 141 6.4 51 6.2 89 4.1 3.5 3.3 2.2 91 97 98 833 1018 1506 I:B'"'fJa"1-sB'l . 111 57 89 n ~ 0 ~ 0 77 882 1506 1700 0.13 0.02 0.05 11 2 0 9.7 4.5 0.0 A A 9.7 4.5 A --~- ~~ - T ',,' -- . ~"'-' 0.0 - Q - .. .l',I \;,~ "'\!l -- ~~, ~ --'--~. 4:",,. ''"' - ",~-,;;: 5.2 22.7% 15 ICU Level ot Service A Date Received: AUG 1 0 2010 Original submittal Baseline %user _name% Synchro 7 - Report Page 1 I I I I I I I I I I I I I I I I I I I I APPENDIX E PHOTOGRAPH OF STUDIED INTERSECTION AND INTERSECTION SIGHT DISTANCE TABLE Date Received: AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I PHOTOGRAPH OF STUDIED INTERSECTION AVAILABLE SIGHT DISTANCE - "- --:- - ~- "'~. ......',.. ~L '":0 ......., -~ ~ 07.26. . 1IIa- 41" Street at Site Access (Looking Right) Date Received: AUG 1 0 2010 Original Submittal I I I I I I I I I I I I I I I I I I I Intersections US Customa Intersection sight Stopping distance for Design sight assen er cars speed distance Calculated Design m h (ft ft ft 15 80 165.4 170 20 115 220.5 225 25 155 275.6 280 30 200 330.8 335 35 250 385.9 390 40 305 441.0 445 45 360 496.1 500 50 425 551.3 555 55 495 606.4 610 60 570 661.5 665 65 645 716.6 720 70 730 771.8 775 75 820 826.9 830 80 910 882.0 885 Intersection sight distance shown is for a stopped passenger car to turn left onto a two-lane highway with no median and grades 3 percent or less. For other conditions, the time gap must be adjusted and required sight distance recalculated. Design speed km/h 20 30 40 50 60 70 80 90 100 110 120 130 Note: Stopping sight distance (m) 20 35 50 65 85 105 130 160 185 220 250 285 Metric Intersection sight distance for assen er cars Calculated Design m m 41.7 45 62.6 65 83.4 85 104.3 105 125.1 130 146.0 150 166.8 170 187.7 190 208.5 210 229.4 230 250.2 255 271.1 275 Exhibit 9-55. Design Intersection Sight Distance-Case BI-Left Turn from Stop Sight distance design for left turns at divided-highway intersections should consider multiple design vehicles and median width. If the design vehicle used to determine sight distance for a divided-highway intersection is larger than a passenger car, then sight distance for left turns will need to be checked for that selected design vehicle and for smaller design vehicles as well. If the divided-highway median is wide enough to store the design vehicle with a clearance to the through lanes of approximately I m [3 ft] at both ends of the vehicle, no separate analysis for the departure sight triangle for left turns is needed on' the minor-road approach for the near roadway to the left. In most cases, the departure sight triangle for right turns (Case B2) will provide sufficient sight distance for a passenger car to cross the near roadway to reach the median. Possible exceptions are addressed in the discussion of Case B3. If the design vehicle can be stored in the median with adequate clearance to the through lanes, a departure sight triangle to the right for left turns should be provided for that design vehicle turning left from the median roadway. Where the median is not wide enough to store the design vehicle, a departure sight triangle should be provided for that design vehicle to turn left from the minor-road approach. The median width should be considered in determining the number of lanes to be crossed. The median width should be converted to equivalent lanes. For example, a 7.2-m [24-ft] median should be considered as two additional lanes to be crossed in applying the multilane highway adjustment for time gaps in Exhibit 9-54. Furthermore, a departure sight triangle for left turns Date Received: 661 AUG 1 0 2010 Original Submittal . . , :. . . . . . . . . . . . . . . . I