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Home My WebLink AboutItem 6.1HrngAllWayStopVomac/Shn CITY CLERK File # D[5J[2][QJ-@][Q] AGENDA STATEMENT CITY COUNCIL MEETING DATE: September 3,1996 Public Hearing: All-Way Stop at Vomac Road / Shannon Avenue Intersection Report Prepared by: Lee S. Thompson, Public Works Director SUBJECT: EXHIBITS A TIACHED: RECOMMENDATION: 1) tv" 2) ./7 ,.\AO 3) 'vu 4) 5) FINANCIAL STATEMENT: 1) 2) 3) Resolution Stop Sign Warrant Study by TJKM Location Map Open Public Hearing Receive Staff presentation and public testimony Question Staff and the public Close Public Hearing and deliberate Adopt Resolution Cost of installing stop signs and pavement markings is approximately $300. This cost would be paid from the Street Maintenance Operating Budget. DESCRIPTION: Staff recently received a request for consideration of an all-way stop at the intersection ofVomac Road and Shannon Avenue. This intersection is currently controlled by a one- way stop for eastbound traffic on Shannon Avenue (see Location Map, Exhibit 3). TJKM, the City's traffic engineering consultant, recently performed a stop sign warrant study at this intersection. T:JKM"' s report is attached as Exhibit 2 and is summarized as follows. This intersection has met the City's requirements for all-way stop signs. The total intersection volume warrant of300 or more vehicles per hour for the highest eight hours of the day was met with an average volume of311 vehicles per hour. The requirement that 1/3 (33-113%) ofthe volume come from the side street (Shannon Avenue) was not strictly met; however, the side street volume was 32%, which is very close. ------------------------------------------------------------------- g:\agenmisc\vomcstop COPIES TO: TJKM William Hagge, 7956 Vomac Road 6.1 ITEM NO. The warrant for accidents (3 per year for a residential area or 5 per year for a non-residential area of a type that would have been correctable by installing stop signs) was not met, as no accidents have occurred at this intersection during at least the last three years. The warrant for sight distance requires that visibility be less than 150 feet in both directions on the major street. The sight distance is greater than 400 feet in both directions. Therefore, the sight distance warrant was not met. The warrant for elementary school crossing is also satisfied. The school facility has been occupied by Valley Christian School for a number of years. The Valley Christian School has now moved to its own campus; however, Dublin Unified School District (DUSD) has indicated that the school will be reactivated as a public school, probably in about a year. DUSD has indicated to Staff that it is in favor of the stop signs, particularly in view of the fact that some of the students will be coming from the area west of San Ramon Road and will therefore have to cross V omac Road to get to school. Notices of this public hearing were mailed to residents near the Vomac Road / Shannon Avenue intersection. Staff recommends that the City Council conduct a public hearing deliberate, and adopt the resolution approving installation of stop signs on V omac Road at Shannon Avenue. Page 2 RESOLUTION NO. - 96 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF DUBLIN ********* APPROVAL OF STOP SIGNS ON VOMAC ROAD AT INTERSECTION OF SHANNON A VENUE The City Council of the City of Dublin hereby resolves as follows: Section 1: Pursuant to City of Dublin Municipal Code Section 6.04.070, and in the interest of public safety, stop signs shall be installed on Vomac Road at the intersection of Shannon Avenue. Section 2. Said stop sign location shall be added to Section 6.16.010 of the City of Dublin Traffic Code. PASSED, APPROVED AND ADOPTED this 3rd day of September, 1996. AYES: NOES: ABSENT: ABSTAIN: Mayor ATTEST: City Clerk g:\agenmisc\resostop EXHIBIT 1 I ~T_~ MEMO August 26, 1996 Project No.: 1S7-OO1 Task 43 Mr. Mehran Sepehrl Christopher S. Kinzel ~ To: From: Subject: Vomac Road and Shannon AvClluc All-Way STOP Analysis This is to present the results of TJKM's analysis related to the request for additional STOP sign cortrOl at the intersection of Shannon AvenueNcmac Road in the City of Dublin. Background JlaideDtiaI Area (Warrant 4) Traft"JC Volumes (Warrant 1) Trame Ac::cidents (Warrant 2) This interxctioD is a T-imersection wilh Shannon Avenue terminating at Vomac Road. Vomac Road is a major street and Shannon Avenue is the minor streeL TIle intersection CUITCIUly openu.c:s with STOP sign control on Slwmon Avenue and no conttol on Vomac Road. An elementary school is located eut: of Vomac Road directly opposite Shannon Avenue. The need for aU-way srop sign control at the interJection was evaluated based on the Oty of Dublin's warrants for all-way SI'OP sign installation, as summarized in Tables I-A, I-B, and I-C. Not Satllfted: Existing conditions at lbe intenection do not satisfy the City's residential area WIft'lJ1tS (see Table I-B). :Both streets are 40 feet wide, but V omac Road does lenninafe approximately SOD feet south of Shannon Avenue. The volume and accident criteria used for City Warrants No. 1 and No.2 were taken from the non-residential column of Table I-A and are indicated in bold type. Satisfied: TJKM conducted 24-hour machine traffic volume counts at the interwection; the eight highest traffic volume hours are summarl2ed in Table n. Compared to the WammlS crable I-B), 1he average of the highest eight hours exceeds the required volume (311 existing VemlS the 300 required). Also. traffic volumes on Shannon A venue nearly exceed the requimd one-thini of the total volume entering the intersection. Therefore, this wammt is considered aatWied. Not Satidled.: City of Dublin accident records indicate that no accidents were reponed at the inteM:Ction for the 1hree years from 1993 through 1995. Five accidents within a single year are required for this location; therefore, this warrant is not met. ~637 Ch.bot Drive, Sllite 214, PleaUl1tol1, CAt. 9045: ~rton . JI..-.o . s.nta Aoa ) " EXHIBIT 2 Mr. Mehran Sepehri SlgbtDistance (Warrant 3) Elementary School Crosslna (Warrant 5) Recommendations Page 2 August 26. 1996 Not Satiafted: The sight distanee aloog Vomac Road was measured for both directions. TI1e intersection sight distance for both directions was measured at greater than 400 feet using the methodology described in CaIt:rans:' Highway Design Manual. To meet this warrant. the sight distance must be less than 150 reet for at leaSt one of the directions on the major street Thus. this wamll1t is not met Not Satllfted: AB Table I-C indicates. neither Part I nor Part II of Warrant S (ElementarY School Crossing) is met. Pedestrian countS were oonducted at 1be in1er&eCtion from the hours of 7:30 10 8:30 a.m. and fIDm. 2:30 to 4:00 p.rn. on a day when schOOl was in session. The countS revealed that a total of three pedestrian crossings WCJe seen in &he a.m. peak period and 20 in the p.m. peak period. However, tbis warrant is not met beCause of the existing STOP sign on vomac Road! LandJ.le Avenue less than 600 feet from this intersection. Based on the fact that the traffic volume warrant is met, all-way STOP-control is recommended. provided that an elementary school remains in operation on the property east of the intersection. The main reason for convening the intersection is the presence of the eleme:nW'Y schOOL Table I-A All-Way Stop Sip Warrant Analysis Warraat Measurement Bequired MeMIY'N Met? 1 Hourly volume en1ering iDtet&eCtion. noo-JeS teS averaged over eight-hour period. (vpb) 40way 350 210 3-way 300 180 31l Yes Minor Stteet JXOPOrtiOll of eigbt-hour 33,*, 32'll No entering volume 2 Com:c18ble accidents in 12-montb non-res res Accidents period S 3 0 No 3 Visibility (in feet) in both direCtions <ISO EB >400' No 00 ~r StnlCt WB >400' 3 Mr. Melmm Sepe.hri Page 3 August 26, 1996 Table I-B Warrant 4 - Residential Area Both streets residential, existing 2S mph speed limits? Neither street an adopted through street? Neither street exceeds 40 feet of roadway width? No existing STOP sign/signal within 600 feet? Streets extend at least 600 feet away from the intersection? Is an All-Way STOP is compatible with area's circulation needs? Residential Area Warrant Met? Yes Yes Yes No No Yes No Part Is crossing the major street part of an official approved elementary school Yes I plan? All Residential Area Warrants met? No Is there at least 280 feet of sight distance on the major street? Yes Part I Satisfied? No Part Are there more than 20 students crossing the major street when at least 300 Yes n vehicles are in direct conflict with pedestrians? .. - 15 there adequate sight distance on the major street for ssa percentile speed or Yes speed limit, whichever is higber'l No existing STOP signisignal within 600 feet of the intersection? No Is the All-Way STOP is compatible with area's circulation needs? Yes Part n aatilfled'1 No Warnmt S satisfied? (either Pan I or Pan II satisfied) No Table I-C Warrant 5 - Elementary School Crossing 1 Mr. Mehran Sepehri Page 4 August 26, 1996 / Vomac Road Shannon Avenue Hour Beginning NB SB WB Total 7:00 A.M. 103 183 206 492 8:00 A.M 87 183 122 392 12:00 P.M. . 113 144 103 360 2:00 P.M. 81 164 73 318 3:00 PM. 70 100 100 270 4:00 P.M. 69 113 78 260 5:00 P.M. 87 60 68 21S 6:00 P.M. 73 68 43 184 Total 683 1,015 793 2.491 Average 85 127 99 311 Table n Highest Hourly Volumes at Shannon Avenue and VomacRoad Note: 'I'raIfie COUOl$ taU.n June 1. 1995. 5 ,// ,/ / / ,/ ~~~ /' ,/ /~~/ /'/' /' /~~/ /' cP /'/,/ /' /' / /' /' /'/' / / /' / /' /',//' ". / /' /' /' / /' /' /' /' /' /' /' /' ./ ./ /' 0- ......J o o :r:: (.) (j) ~ IBeL 0 0 a:: 06L 7907 m .J .J 7925 ~ . ,,^ON ROJl..D Sp..N RJI.. LOCA TION MAP NO SCALE ~l. ~ EXHIBIT 3 ~