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Home My WebLink AboutTraffic Control Device - Intersection of Lafayette & Wayne - Revise Stop SignsBOARD OF PUBLIC WORKS Request for Approval of Traffic Control Device(s) Date: January 3, 2017 I hereby submit the following installation or change of traffic control devices for review: Traffic Request Number: TR16-148 ❑ New Installation ❑ Removal Revision ❑ Stop Sign ❑ Stop Sign ® Stop Sign ❑ Yield Sign ❑Yield Sign ❑ Yield Sign ❑ Speed Limit, _mph ❑ Other, List ❑ Speed Limit, _mph ❑ Other, List ❑ Speed Limit, _mph ❑ Other, List Location(s): Intersection of Lafayette Boulevard with Wayne Street This has been submitted: ❑ In response to request by a citizen/ neighbor/ passerby: ❑ In response to contracted reconstruction or improvements ❑ In response to developer -provided reconstruction or improvement ® In response to an internally -generated concern from Eric Horvath Remarks: Tbl YT. Nawrot, PE, PLS ssistant City Engineer Date: APPROVED: SOUTH BEND BOARD OF PUBLIC WORKS ff� Gary A. Gilot, President Suzanna M. ritzberg, Membo James 1AA.Muellerr,M�meer ��U K� n ,11 Elizabeth A. Maradik, Member Therese J. Dorau, emb`d Revise intersection to All -Way STOP configuration, with new STOP signs, All -Way placards and reflectorized strips on sign posts, all 4 approaches . Boyles, PhD, City Engineer Alt -hest: — 'Yinda M. Martin, Clerk / , // 7 Date Distribution: Bureau of Traffic and Lighting and South Bend Police Department Traffic Division JO�SOV TII g�HO F Z:, CITY OF SOUTH BEND DEPARTMENT OF PUBLIC WORKS ,e� DIVISION OF ENGINEERING • 1865 TO: Board of Public Works THROUGH: Roger T. Nawrot, P.E., PLS, Assistant City Engineer FROM: Tara Weigand, Engineer I SUBJECT: Lafayette Blvd. & Wayne St. Intersection Multi -Way Stop Warrant Analysis Summary DATE: January 3, 2017 Purpose During the two-way conversion of downtown South Bend, which included the conversion of Lafayette Boulevard, a temporary all -way stop was placed at the intersection of Lafayette Boulevard and Wayne Street to accommodate traffic volume displaced by closures at Michigan and Main Streets and to address an increase in stop -correctable collisions. The Engineering Division has received requests to make the all -way stop permanent. This memo summarizes the warrant analysis conducted to assess the need for a permanent all -way stop at this intersection and the proposed recommendation. Location & Background Lafayette Boulevard is a major collector that extends from Riverside Drive south to Indiana Avenue. At its intersection with Wayne Street it has one travel lane per direction with a center two way left turn lane. Wayne Street from Main Street west to Chapin Street is a local road. At its intersection with Lafayette Boulevard it is a three lane road. Lafayette Boulevard and Wayne Street both have sidewalks on each side of the street and parking is allowed on both sides of both streets. Warrant Requirements The Manual on Uniform Traffic Control Devices sets forth the following requirements to warrant the installation of multi -way stop control: Figure 1 Lafayette Blvd. & Wayne St. intersection The following criteria should be considered in the engineering study for a multi -way STOP sign installation: A. Where traffic control signals are justified, the multi -way stop is an interim measure that can be traffic control signal. B. Five or more reported crashes in a 12-month period that are susceptible to correction by a multi - way stop installation. Such crashes include right -turn and left -turn collisions as well as right- angle collisions. We deliver services that empower everyone to thrive!! C. Minimum volumes: 1. The vehicular volume entering the intersection from the major street approaches (total of both approaches) averages at least 300 vehicles per hour for any 8 hours of an average day; and 2. The combined vehicular, pedestrian, and bicycle volume entering the intersection from the minor street approaches (total of both approaches) averages at least 200 units per hour for the same 8 hours, with an average delay to minor -street vehicular traffic of at least 30 seconds per vehicle during the highest hour; but 3. If the 8511percentile approach speed of the major -street traffic exceeds 40 mph, the minimum vehicular volume warrants are 70 percent of the values provided in Items I and 2. D. Where no single criterion is satisfed, but where Criteria B, C.1, and C.2 are all satisfied to 80 percent of the minimum values. Criterion C3 is excludedfrom this condition. Existinq Traffic Controls The signalization at this intersection was removed on November 18, 2014 as part of the Smart Streets Initiative, which included the conversion of Lafayette Boulevard from a one-way to two-way street. When the traffic signal was removed, Lafayette Boulevard was designated as the through movement and Wayne Street was a stop condition. A temporary all -way stop was installed at the intersection in summer 2016 at the direction of the City Engineer to address increased traffic volumes and stop -correctable collisions during subsequent phases of the Smart Streets initiative. Traffic Data Traffic Counts were taken on July 12, 2016 at each approach of this intersection and are reported in Table 1. Because the MUTCD volume warrant specifies 8 hours of traffic volume data, traffic counts from 2010 are included in Table 2 for reference. Table l Traffic Count Data (2016-7-12) Total of Total Lafayette Lafayette Wayne Wayne Lafayette Wayne Date Time Boulevard Boulevard Street Street Boulevard Street Northbound Southbound Westbound Eastbound Approaches Approaches 7/12/2016 7:00 AM 364 277 61 195 641 256 7/12/2016 8:00 AM 429 423 56 289 852 345 7/12/2016 3:00 PM 393 497 55 180 890 235 7/12/2016 4:00 PM 354 503 71 260 857 331 7/12/2016 5:00 PM 368 527 60 304 895 364 Total 1908 2227 303 1228 1 4135 1531 Table 2 Traffic Count Data (2010-2-11) Date Time Lafayette Boulevard Northbound Lafayette Boulevard Southbound Wayne Street Westbound Wayne Street Eastbound Total of Lafayette Boulevard Approaches Total of Wayne Street Approaches 2/11/2010 6:00 AM 216 0 19 40 216 59 2/11/2010 7:00 AM 546 0 77 141 546 218 2/11/2010 8:00 AM 463 0 54 118 463 172 2/11/2010 9:00 AM 291 0 43 ill 291 154 2/11/2010 10:00AM 332 0 55 110 1 332 165 2/11/2010 11:00AM 354 0 47 108 354 155 2/11/2010 12:00 PM 398 0 55 146 398 201 2/11/2010 1:00 PM 367 0 56 151 367 207 2/11/2010 2:00 PM 404 0 58 149 404 207 2/11/2010 3:00 PM 495 0 87 175 495 262 2/11/2010 4:00 PM 397 0 124 157 397 281 2/11/2010 500 PM 363 0 54 149 363 203 Total 4626 0 729 1555 4626 2284 We deliver services that empower everyone to thrive!! Collision Data Three years of collision records were accessed in the Aries portal (November 2013- 2016). Figure 2 illustrates this data categorized by the manner of collision, with the types susceptible to correction by four-way stops shaded red. Of the eighteen incidents reported, the eleven most recent collisions occurred over the span of a single year. 14 12 N c 10 0 8 u w 0 6 a, a E 4 3 Z 2 0 LEFT TURN LEFT/RIGHT TURN OPPOSITE REAR END RIGHTANGLE SAME DIRECTION DIRECTION SIDESWIPE SIDESWIPE Manner of Collision Figure 2 Collisions (2014-2016) Recommendation The eleven collisions recorded over the most recent year, nine of which were susceptible to correction by a four-way stop, well exceed the five crash threshold set forth in the IMUTCD 2011. The volumes observed over a five hour period also well exceed the 300 and 200 vehicle per hour thresholds for the major and minor street approaches respectively (Table 1). Though eight hours of recent data are not available, traffic counts from February 2010 can be referenced to estimate the traffic volume on off-peak hours. The three hours from 12:00 PM to 2:00 PM (highlighted in Table 2) also meet the volume warrant. Though this data is not recent, it likely provides a conservative estimate of the present volume. A comparison of the on -peak volume recorded in 2010 and 2016 indicate traffic has increased by approximately 40% and 90% on the Wayne Street and Lafayette Boulevard approaches respectively. As a result, it can be reasonably argued that the 8 hour volume warrant is likely met. The observed traffic volume as well as the high rate of collision at this intersection indicate that all -way stop control is warranted at this location. The proposed recommendation is demonstrated in Figure 3. We deliver services that empower everyone to thrive!! rr r t Abe! - relAclB€� E Figure 3 Proposed traffic control We deliver services that empower everyone to thrive!! BOARD OF PUBLIC WORKS AGENDA ITEM REVIEW REQUEST FORM Date January 3, 2017 Department Name Tara Weigand Division/Bureau Public Works Engineering BPW Date January 10, 2017 Phone Extension 5998 to Submittal to Legal ❑ Attorney Name: Controller ❑ Controller review is required for all Contracts $5,000.00 or more and greater than one year in length per the City Purchasing Policy Purchasing ❑ Check the Appropriate Item Type —Required for All Submissions ❑ Agreement ❑ Contract ❑ Pro ❑ Professional Services osal p ❑Addendum ❑ Resolution ❑ ❑ Bid Opening Quote Opening ❑ Bid Award ❑ Quote Award ElReq. to Advertise ❑Title Sheet ❑ Change Order No. ❑ C/O & PCA No. ❑ PCA ❑ Ease/Encroach. ® Traffic Control: ❑ Other: Company or Vendor Name New Vendor MBE/WBE Contractor MBE/WBE Contractor Requested Project Name Project Number Funding Source Account No. Amount Terms of Contract Purpose/Description Amount of nformation ❑ Yes ❑ No ❑ If Yes, Angroved by Required Contractor's Certification Forms Attached (Non - Collusion, Non -Discrimination, Non -Debarment, E-Verify, Iran, etc.) Required For Change Orders Only Increase $ Decrease $ Previous Amount $ Current Percent of Change: % New Amount $ Total Percent of Change: % Dispersal After Approval Copy Original ® ❑ Roger Nawrot, Assistant City Engineer ® ❑ Ed Gleckler, Manager Bureau of Traffic & Lighting ® ❑ SBPD