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Home My WebLink AboutResolutions - No. 91-94RESOLUTION NO. 91-94 --------------------- --------------------- A RESOLUTION OF THE LODI CITY COUNCIL AMENDING TRAFFIC RESOLUTION NO. 87-163 TO APPROVE THE SPEED ZONE SURVEY FROM THE WEST CITY LIMITS TO HAM LANE, REDUCING THE SPEED LIMIT BETWEEN MILLS AVENUE AND HAM LANE AND APPROVING THE INSTALLATION OF AN OVERHEAD FLASHING BEACON AT THE CROSSWALK IN FRONT OF LODI LAKE PARK, AND APPROVING THE APPROPRIATION OF FUNDS THEREFOR. BE IT RESOLVED, that the Lodi City Council does hereby approve the Speed Zone Survey from the West City Limits to Ham Lane, attached hereto as Exhibit A; and RESOLVED, by the Lodi City Council that City of Lodi Traffic Resolution No. 87-163, Section 7 - Speed Limits - is hereby amended to reduce the existing speed limit between Mills Avenue and Ham Lane from 40 mph to 35 mph, as indicated in the Speed Zone Survey; and RESOLVED, that the Lodi City Council hereby approves the installation of an overhead flashing beacon at the crosswalk in front of Lodi Lake Park, as shown on Exhibit B attached hereto; and BE IT FURTHER RESOLVED, the Lodi City Council hereby approves the appropriation of $5,000 for the estimated cost of the installation of the flashing beacon, which funds are to be allocated from Transportation Development Act (TDA) funds. Dated: May 15, 1991 I hereby certify that Resolution No. 91-94 was passed and adopted by the City Council of the City of Lodi in a regular meeting held May 15, 1991 by the following vote: Ayes: Council Members - Pennino, Pinkerton, Sieglock Snider and Hinchman (Mayor) Noes: Council Members - None Absent: Council Members - None ice M.UU Reimche City Clerk 91-94 RES9194JTXTA.OIV U) C.IVVIIY C: Cn 11 %i L , 1,02 1 AND TRAFFIC SURVEY -3 yj LAK.EtWmr� SEE NARRATIVE FORKB c! SHooL. BACKGROUND INFORMATION I n I �1 el RZ IL2 T d l�C�o (k1� 314(0 (40)J� k(40) F p(4o) I f I (4p� RI 54 G zu Q ToV_r1Eg tm SPEED TABLE ROADWAY WIDTH Id-bY (VDYLIL"� NO. OF LANES 2 + MEDIAN (TYPE) 1. cWe TRAFFIC SIGNAL DATA AVERAGE DAILY TRAFFIC FOOD q,0,:.0 Ib °jA0 OBS SPEED- CRITICAL ,BS' y/Pj 40 +0 ' �?> .'a +0 -PACE( %) WPi 31-41 ('IS) 11 -4'i(83;) epp 3i-41 Lot) yt-4-L ec, -MEDIAN SO'"% Fj 154 37 I E 13 15+ 311 EXISTING SPEED ZONE 40 nYH PROPOSED SPEED ZONE 40 MP4 —moi - 35 MPH — — 40 MPF) LEGEND: MPH SPEED GRAPH T -SIGN LOCATION RI -STOP SIGN R2( I -SPEED LIMIT SIGN (MPH R39 -YIELD SIGN C -INSTALLATION C (SCHOOL 2S MPH ,Mg SIGNS,(W65R2(2SI, RT21I Iz -TRAFFIC SIGNAL ----CITY LIMIT - - - -CRITICAL SPEED -LOWER LIMIT OF PACE ACCIDENT PLOT YR: 1909 l 0 7—J-1 y 22 1 3 I 1 YR: I`I90 I O I 11 1 I I 2 1 °i 3 2 1 1 1 I ACCIDENT RATE-ACC./MILL. VEH-MI. 1. D 1.8 C.,o... ' ` 5�1 ••�• •r•.•.•• �� CITY.OF LODIW TURNER RD ZONE `'^• t:k,r� cc " Oi1r PUBLIC WORKS DEPARTMENT PUBLIC CITY LIMIT TO HAM LN suRvev Eal N.: SPEED ZONE REPORT - Turner Road, West City Limit to Ham Lane REFERENCE - Speed zone surveys are performed in the City of Lodi following State of California Department of Transportation (Caltrans) guidelines in accordance with Section 4802(b) of the California Vehicle Code. These guidelines are outlined in Chapter 8 of the Caltrans Traffic Manual. STUDY Important factors to consider in determining the speed limit which is most appropriate to facilitate the orderly movement of traffic and that is reasonably safe are prevailing speeds, unexpected conditions to drivers, and accident records. Prevailing Speeds (85th Percentile Speeds) - Reasonable speed limits conform to the actual behavior of the majority of motorists, and by measuring motorists' speeds, one will be able to select a speed limit that is both reasonable and effective. Speed limits should normally be established at the first five mile per hour increment below the 85th percentile speed. However, in matching existing.conditions with the traffic safety needs of the community, engineering judgement may indicate the need for a further reduction of five miles per hour. The following prevailing speeds have been measured in the segments shown: SEGMENT West City Limit to•Lower Sacramento Road (North) Lower Sacramento Road (North) to Ham Lane Unexpected Conditions WESTBOUND EASTBOUND 40 mph 38 mph 40 mph 40 mph When roadside development results in traffic conflicts and unusual conditions which are not readily apparent to drivers, speed limits below the 85th percentile are warranted. The following factors were considered: roadway design speed, safe stopping sight distance, superelevation, shoulder conditions, profile condition, intersection spacing and offsets, commercial driveway characteristics, and pedestrian traffic in the roadway without sidewalks. In reviewing the area from Mills Avenue to Loma Drive, some of the south side does not have sidewalk and there is pedestrian activity from Lodi Lake Park. This is not readily apparent to drivers traveling eastbound. SPEEDZ02/TXTW.02M `: Roadside development in the area consists of the Lodi Lake Park and the drive-in across the street. Due to the lack of a food vendor in the park, there is a large number of pedestrians crossing Turner Road. There are a number of residential driveways and the lake entrance and exit on Turner Road. Visibility from these driveways is often reduced due to on -street parking. The effects of the above are included in the recommendation to reduce the speed limit. Accidents Accident records of the two most recent years should be considered when determining speed zones. Accidents on segments of roadways are classified by their accident rate. Accident rates are determined by the number of accidents occurring within a segment of roadway and the traffic volume within that segment. Accident rates are shown in accidents per million vehicle miles (ACC/MVM). The current accident rate of 4.10 ACC/MVM in the segment of Turner Road from Lower Sacramento Road (north) to Ham Lane has nearly doubled from the 2.30 ACC/MVM calculated in the 1989 speed zone survey. Traffic volumes in this segment have increased from 13,700 to 16,300 vehicles per day and accidents have increased from 17 to 36. The majority of these accidents were rear -end collisions, which are speed -related. The accident rate in the segment of Turner Road from Lower 1 Sacramento Road/Woodhaven Lane to Lower Sacramento Road (north) has decreased from the 2.75 ACC/MVM calculated in the 1989 speed zone survey to the current 1.85 ACC/MVM. ° RECOMMENDATION - Based solely on the 85th percentile speeds observed in the field, the posted speed limit from the west City limit to Ham Lane could be 40 mph. However, considering the described conditions not readily apparent to the driver and the increased accident rate, it is recommended to reduce the speed limit to 35 mph from Mills Avenue to Ham Lane. The existing and recommended speed limits are shown below. TURNER ROAD SEGMENT EXISTING RECOMMENDED West City Limit to Mills Avenue 40 mph 40 mph Mills Avenue to Ham Lane 40 mph 35 mph Jack L. Ronsko Public Works Director ` SPEEDZ02/TXTW.02M . CI C CITY OF LODI . • PUBLIC WORKS DEPARTMENT Tt1e�l�� 12oAi� c:Lrccua� is �2�MavE irxf6tlt-�G-� � RoSSWAt,IC. 11 1 11 fLH�=_�p r,64�:lI-! ml-)f�sTg lAr�! 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