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Home My WebLink About7.1 AVB/SchlZnTrfcStdy CITY CLERK File # AGENDA STATEMENT CITY COUNCIL MEETING DATE: July 15, 1997 SUBJECT: Amador Valley Boulevard / Surrounding School Zone Traffic Study Report Prepared by: Lee S. Thompson, Public Works Director EXHIBITS ATTACHED: 1) 2) 4) 5) 6) Report from TJKM Adopted City warrants for ail-way stop intersections Resolution Approving Stop Signs on Amador Vailey Boulevard at York Drive and on Tamarack Drive at Emerald Avenue Resolution Approving No Parking Zone on Amador Vailey Boulevard In Front of#7197 (daycare) and #7185 Resolution Approving No Parking Zone on Penn Drive at Wells School Location Maps (2) RECOMMENDATION: FENA~CIAL STATEMENT: Adopt Resolutions (Exhibits 3, 4, and 5) The estimated cost for the two stop sign installations is approximately $1,000 each due to the need for "stop ahead" si~maing. The estimated cost for red curb on Penn Drive and on Amador Valley Boulevard at #7197 and 7185 is less than $100. Sufficient funds are available in the Street Maintenance Operating Budget. DESCRIPTION: This study is the result of requests received from both the City Council and the Dublin Unified School District and encompasses not only the residential portion of Amador Valley Boulevard (east of Village Parkway) but also the surrounding neighborhoods near Wells Middle School and Frederiksen Elementary School. The City's traffic engineering consultant, TJKNL performed stop sign warrant studies for seven intersections in this area, as well as sight distance analysis near Wells School. Their report, Exhibit 1, prox'ides the stop sign warrant study information. Two intersections have met the warrants for an all-way stop intersection. Non-residential warrants were applied in both cases. These are Amador Valley Boulevard at York Drive and. Tamarack Drive at Emerald g:\agenmisc\avbstudy COPIES TO: TJKM; Lori Sorrow (Wells School PFC), Jeanne Howland, DUSD ITEM NO. ~ Avenue. The other intersections studied do not meet the warrants at this time. Area residents were senl mailed notices regarding the proposed stop signs. Amador Valley Boulevard at York Drive The Amador Valley Boulevard/York Drive intersection meets the warrants for an all-way stop on the basis of Warrant #5Co), elementary school crossing. Students attending Frederiksen Elementary School use this crossing. As a related issue, one of the Councilmembers expressed a concern that eastbound drivers who are dropping children offat the daycare center located at 7197 Amador Valley sometimes stop in the travel lane at York Drive to make a U-turn, creating the potential for rear-end accidents. The daycare is located on the north side of the street. A stop sign at this location would require that all drivers come to a stop, which would reduce the potential for rear-end accidents caused by U-turns. In order to allow sufficient room for U-tums, however, Staff'is recommending that a minor amount of red curb be installed in front of the daycare center and the adjacent residence at 7185 Amador Valley (see location map). The amount of red curb to be installed would total approximately 25 feet (separated by a driveway) and would leave adequate parking for at least one vehicle in front of#7185. While the Municipal Code allows this amount of red curb to be approved by the City Manager, Staff is including a resolution in this instance since the issue is related to the stop sign installation. Staff has notified both the daycare center and the adjacent resident of this recommendation. Tamarack Drive/Emerald Avenue Intersection An all-way stop is recommended at this intersection on the basis of Warrant #3 "Visibility" (sight distance). The sight distance at this intersection is less than 150 feet in either direction. No Parking Zone at Wells School In addition to the recommendation for stop signs, Staffis recommending two additional areas of No Parking Zone along the frontage of Wells School. These No Parking Zones are intended to improve sight distance. School district staff, as well as the Parent-Faculty Club (PFC) submitted the original request for the parking restrictions and concurs with the recommendation. Stafffeels that these recommended No Parking areas are needed for safety reasons and will not have a significant impact on available parking. The total additional No Parking area will remove about thre_~e on-street parking spaces, which are typically used by school faculty. The school provides on site parking for faculty members. Staffhas met personally with some of the neighbors in this area, who did not have any objection to the proposed No Parking areas. All of the residents were sent a mailed notice. Staff recommends that the City Council receive the staff presentation, receive comments from the public, and adopt the resolutions approving stop signs at the two intersections and no par-king zones on Penn Drive and Amador Valley Boulevard. Pane 2 ~i~-i.ransport~tion Consultants MEMO June 20, 1997 Project No.: 157-001 Task 55 To: Mehran Sepehri From: Subject: Christopher S. Kiazel Amador Valley Boulevard/Wells Middle School Traffic Investigations TJKM was asked to investigate certain traffic conditions both on the residential section of Amador Valley Boulevard and on nearby school-related streets, We were asked to perform all-way STOP sign warrants at several intersections within the study area. In addition, we have examined the feasibility of additional curbside parldng prohibitions along Penn Drive to improve driveway sight distance- All-Way STOP Sign Warrants TJICM evaluated the need for alt-way STOP sign control at the intersections listed in Table I. Detailed calculations arc attached. Two of the intersections studied warrant alt-way STOP control. The intersection of Amador Valley Boulevard and York Drive meets the school crossing warrant (Warrant 5), and the intersection of Tamarack Way and Emerald Drive meets the si_mbt distance warrant (Warrant 3). Detailed warrant summaries are attached. It should be noted that Amador Valley Boulevard does not meet the residential area criteria, because of the street width in excess of 40 feet. Intersection Me, ets Warrants? Yes No No No yes No Amador Valley Bi/York Dr Amador Valley BVEmerald Ave Amador Valley BI/Ann Arbor Wy Amador Valley Bi/Burton St Tamarack Dr/Emerald Ave Penn Dr/Spruce Ln W No Penn Dr/Poplar Y It should also be noted that the CiD' Council has expresse3 concerns regarding eastbound-to- westbound U-mrna on Amador Valley Boulevard at York Drive. A STOP sign at this location would provide protection for these movements. 4234 Hacienda Drive, Suite 101, Pleas; · Phone (510)463-0611 .Fax (510)463- Mehran Sepehri Page 2 June 20, 1997 Penn Drive Parking Prohibition Concern has been expressed regarding sight distance at the driveways to the main parking lot at Wells Middle School. Near the southern driveway, no parking restrictions currently exist. At the northern driveway, red curb exists on the south side, but no restrictions are present on the north side. Based on our field observations at the site, it is recommended that the parking be prohibited along the following additional segments of Penn Drive: Northern Driveway: From the driveway to a poiat 20 feet north. Southern Driveway: From the driveway to a point 30 feet north, and to the first "20 MINLrI'E PARKING" sign to the south (approximately 75 feet). 4234 Hacienda Drive, Suite 101, Pleasanton, California 94588-2721 DETAIL OF TRAFFIC COUNT INFORMATION (3 PP) Table IH-A Highest Hourly Volumes - Amador Valley Boulevard/York Drive Amador Valley Boulevard York Drive Hour Beginning EB WB NB Total 9:00 A.M. 297 470 74 84! l:00 P.M. 373 301 87 761 3:00 P.M. 443 288 80 811 4:00 P.M. 467 349 74 890 5:00 P.M. 521 336 83 940 6:00 P.M. 690 411 78 1,179 7:00 P.M. 679 381 68 1,128 8:00 P.M. 476 281 36 793 Total 3,946 2,817 580 7,343 Average 493 352 73 918 Note: Traffic counts taken September 12, 1996 Table IH-B Highest Hourly Volumes - Amador Valley Boulevard/Emerald Avenue Amador Valley Boulevard Emerald Avenue Hour Beginning EB WB SB Total 8:00 A.M. 211 376 78 665 9:00 A.M. 252 409 116 777 1:00 P.M. 345 284 80 709 4:00 P.M. 385 320 34 739 5:00 P.M. 458 306 48 812 6:00 P.M. 627 376 47 1,050 7:00 P.M. 577 345 40 962 8:00 P.M. 409 252 44 705 Total 3,264 2,668 487 6,419 Average 408 127 60 802 Note: Traffic counts token September 12. 1996 Table III-C Highest Hourly Volumes - Amador Valley Boulevard/Ann Arbor Way Amador Valley Boulevard Ann Arbor W~y Hour Beginning EB WB NB Total 9:00 A.M. 229 388 12 629 1:00 P.M. 312 277 4 593 3:00 P.M. 342 248 10 600 4:00 P.M. 354 317 6 677 5:00 P.M. 397 298 9 704 6:00 P.M. 572 370 9 951 7:00 P.M. 522 333 6 861 8:00 P.M. 357 243 7 607 Total 3,085 2,474 63 5,622 Average 386 309 8 703 4otc: Traffle counm taken September 12, 1996 Table III-D llighest Hourly Volumes - Amador Valley Boulevard/Burton SWeet Amador Valley Boulevard Burton SWeet Total Hour Beginning EB WB SB 9:00 A.M. 232 ~,85 -... 159 876 2:00 P.M. 281 272 76 629 3:00 P.M. 327 243 79 649 4:00 P.M. 347 317 39 703 5:00 P.M. 379 285 53 717 6:00 P.M. 561 348 59 968 7:00 P.M. 503 367 74 944 g:00 P.M. 351 334 93 778 Total 2,981 2,651 632 6,264 Average 373 331 79 783 __ ~ote: Traffic counts taken September 12, 1996 Table HI-E Highest Hourly Volumes at Tamarack Drive and Emerald Avenue Hour Beginning Tamarack Drive Emerald Avenue Total EB WB NB 8:00 A.M. 65 125 35 225 9:00 A.M. 118 199 73 390 2:00 P.M. 89 87 25 201 3:00 P.M. 135 116 31 282 4:00 P.M. 77 79 20 176 5:00 P.M. 101 133 20 254 6:00 P,M. 141 106 34 281 7:00 P,M, 95 70 26 191 Total 821 915 264 2,000 Average 102.63 114 33 250 qote: Traffic coun~ taken Febmtry 4, 1997. Z 0 0 0 0 (Adopted by City Council Resolution 119-92 9/28/92) A fully-justified, properly installed all-way stop can effectively assign right-of- way, reduce vehicle delay, and decrease accidents. All-way stop sign installation may be considered if any of the following conditions exist' 1. VOLUME (a) Total vehicular volume entering the intersection from all approaches must average 350 vehicles per hour for a four-way intersection OR 300 vehicles per hour for a T-intersection for any e~ght hours of an average day. The eight hours need not be consecutive. In addition, the combined vehicular and pedestrian volume entering the intersection from the minor street or streets for the same eight hours must average at least 1/3 of the total volume entering the intersection. 2. ACCIDENTS Five or more reported accidents within a 12-month period and of a type susceptible to correction by installation of all-way stop signs. 3. VISIBILITY The intersection sight-distance (based on Caltrans standards) on one or more approaches of the major street is less than 150 feet. 4. RESIDENTIAL AREA Warrants are to be reduced to 60% of the values in Section 1 and 2 above if ALL of the following conditions are met: (a) (~) (c) (d) (e) (f) Both streets are residential streets with existing 25 mph speed limits. - Neither street is an adopted throngh street. Neither street exceeds 40 feet of roadway width. No existing stop sign or signal is located on the more heavily traveled street within a distance of 600 feet. Streets extend 600 feet or more away from the intersection on at least three sides. Installation of a all-way stop is compatible with overall traffic circulation needs for the residential area. 5. ELEMENTARY SCHOOL CR0g§ING This warrant is satisfied by the conditions in E__ITHER (a) OR (b) below (a) Students cross the more heavily traveled street at the intersection as part of an official elementary school route plan, and if ALL of the following conditions are met: (1) Ail of the conditions in Section 4 Residential Area (a through f) are met. (2) (~) The more heavily traveled street has more than 280 feet intersection sight distance visibility (based on Caltrans standards). The elementary school route plan has been approved by the Public Works Director/City Engineer. OR More than 20 elementary school children per hour cross the more heavily traveled street going to or from school at a time when at least 300 vehicles are in direct conflict with pedestrians, AN~ if all of the following conditions are met: (1) The more heavily traveled street has adequate intersection sight distance visibility (based on Caltrans standards) for the 85th percentile speed o__Er speed limit of the major street, whichever is higher. (2) No existing stop sign, signal, or crosswalk is located on the major street within a distance of 600 feet. (3) Installation of an all-way stop is compatible with overall traffic circulation needs. RESOLUTION NO. - 97 A RESOLUTION OF TI=IE CITY COUNCIL OF TIlE CITY OF DUBLIN APPROVING INSTALLATION OF STOP SIGNS ON AMADOR VALLEY BOULEVARD AT THE INTERSECTION OF YORK DRIVE AND ON TAMARACK DRIVE AT THE INTERSECTION OF EMERALD AVENUE 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 erected at the following locations: Amador Valley Boulevard, at the intersection of J"ork Drive Tamarack Drive, at the intersection of EmeraM Avenue Section 2. Said stop sign locations shall be added to Section 6.16.010 of the City of Dublin Traffic Code. PASSED, APPROVED AND ADOPTED this 15th day of July, 1997. AYES: NOES: ABSENT: ABSTAIN: ATTEST: Mayor g:~ag~nmisc~res2stop City Clerk RESOLUTION NO. - 97 A RESOLUTION OF TItE CYFY COUNCIL OF ~ CITY OF DUBLIN ESTABLISltlNG A NO PARKI/qG ZONE ON AMADOR VALLEY BOULEVARD AT FRONTAGE OF #7197 AND #7185 The City Council of the City of Dublin hereby resolves as follows: Section 1: Pursuant to City of Dublin Municipal Code Section 6.04.250, and in the interest of public safety, No Parking Zones shall be established on Penn Drive at the following locations: On the northerly curbline of Amador Valley Boulevard, westerly of the driveway of# 7185 Amador Valley Boulevard (frontage of # 7]97) a distance of ten feet, and easterly of the driveway of 7185 Amador Valley Boulevard a distance of fifieen feet. Section 2. Said No Parking Zone shall be added to Section 6.28.010 of the City of Dublin Traff c Code. PASSED, APPROVED AND ADOPTED this 15th day of July, 1997. AYES: NOES: ABSENT: ABSTAIN: ATTEST: Mayor g:~agenmiscXresavbpk City Clerk RESOLUTION NO. - 97 A RESOLUTION OF THE CITY COUNCIl. OF THE CITY OF DUBLIN ESTABLISHING A NO PARKING ZONE ON PENN DRIVE GENERALLY SOUTHERLY OF LANCASTER ROAD The City Council of the City of Dublin hereby resolves as follows: Section 1' Pursuant to City of Dublin Municipal Code Section 6.04.250, and in the interest of public safety, No Parking Zones shall be established on Penn Drive at the following locations: On the generally westerly curbline of Penn Drive, from a point 80feet southerly of the southerly curbline of Lancaster Road, southerly a distance of J j 2 feet; and from a point 272feet southerly of the southerly curbline of Lancaster Road, southerly a distance of J 44 feet. Section 2. Said No Parking Zone shall be added to Section 6.28.010 of the City of Dublin Traffic Code. PASSED, APPROVED AND ADOPTED tkis 15th day of July, 1997. AYES: NOES: ABSENT: ABSTAIN: ATTEST: Mayor g:~agc~mmi sc~respenpk City Clerk DETAIL OF PROPOSED RED CURB (NO SCALE) FREDERIKSEN LN PROPOSED #7197 (DAYCARE) I #7185 (RESIDENCE) r~ ~~ 'Fa"~"_:''-~ ~' ~ =' ' -"'"¥ AMADOR VALLEY BOULEVARD STOP SIGNS EXISTING STOP SIGN .~EE INSET (ABOVE) FOR DETAIL'~_ol DF PROPOSED NO PARKING EXISTING STOP SIGN .,,,' ~o~ %- ~,.~ PROPOSED STOP SIGNS N STOP MAI::) SIGNS (NO SCALE) £99~' Z Z ~LOCATION MAP (NO SCALE) 060Z WELLS MIDDLE SCHOOL