The URL can be used to link to this page

Home My WebLink AboutAgenda Report - May 20, 1992 (95)OP a CIN OF LODI W UNC10t COMMUNICATION AGENDA TITLE: Traffic Resolution Amendment - Approve New Speed Limits on Lockeford Street frau 150 Feet East of Stockton Street to Cherokee Lane MEETING DATE: May 20. 1992 PREPARED BY: Public Uorks Director REOCMMEIDEDACTION: That the City Council adopt a resolution amending the Traffic Resolution #87-163 to approve the proposed speed 1i m it changes on Lockeford Street from 150 feet east of Stockton Street to Cherokee Lane. a distance of 2.180 feet, f= 30 mph to 35 mph. B4CKGRCLJKD INFORMATION: Due to the unusually high number of speeding citations issued and the nature of the street, the Municipal Court requested Public Works to restudy a portion of Lockeford Street. Public Works recently updated the engineering and traffic studies for this area. These studies were performed following the State of California Departmnt of Transportation (Caltrans) guidelines in accordance with California Vehicle Code Section 40802_ The attached engineering and traffic study includes measurement of prevailing speeds by a radar survey, review of unexpected conditions to the driver, and accident data. Staff recomnends increasing the existing 30 mph speed I i m i t to 35 mph from 150 feet east of Stockton Street to Cherokee Lane. The 85th percentile speed of the radar speed studies supports this recommendation. FUNDING: Street Maintenance Account. Jac L. Ronsko ubl c Works Director Prepared by Tom Cartwright. Traffic Engineering Assistant JLR/TC/Tm Attactownts cc: City Attorney APPROVED: l �� • � � - � -- THOMAS A. PETERSON City Manager CTRAFF38/TXTW.02M (CO.COM) May 13. 1992 Cc -1 May 1992 SPEED ZONE REPORT - Lockeford Street (Church Street to Cherokee 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 40802(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 hehavior of the majority of motorists, and by measuring motorists' speeds, one w i l l be able -to select a speed I i m i t that i s both reasonable and effective. Speed I i m i is should normally be established at the first five mile per hour increment below the 85th percentile speed. However, i n 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. Four radar surveys were performed and the 85th percentile ranged from 33 to 35 mph as shown below: Lockeford Street Eastbound Westbound Church Street - Cherokee Lane 33-34 mph 33-35 mph Unexpected Conditions When roadside development results i n 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. A portion of the north and south side of Lockeford Street, between Sacramento Street and Cherokee Lane does not have sidewalk. It i s not recommended to further reduce the speed limit due to sidewalk condition; however, i t was considered i n the overall recommendation. SPEEDZ05/TXTW.02M WEED 7_0V RFFOPT - Lockeford Street (Church Street to Cheroke� ��.i Cj d�e- Accident records c f the two most recent years were considered in determining speed zones. Accidents on segments of roadways ore classified by their accident rate. Accident rates are dctermined by the number of accidents occurring within a seoment of roadway and the traffic volume within that segment. Accident rates are shown in accidents per million vehicle miles (ACC/MVM) and ranged fam 4.5 to 20.1 ACC/MVM. The average city-wide accident rate i s 4.7 ACC/MVM. The segment between Church Street and 150 feet east of Stockton Street has a high accident rate due to the high number of accidents at Lockeford Street and Stockton Street. This intersection meets Caltrans guidelines for a traffic signal and is on the City's Signal Priority List. It is recommended that the speed limit of this seoment remain at 30 mph. Church Street to 150 feet E/Stockton Street Based on the 85th percentile speeds observed i n the conditions not apparent to the driver, and accident speed I i m it of 30 mph is appropriate. 150 feet E/Stockton Street to Cherokee Lane field, described data, the posted A posted speed I i m i t of 35 mph i s appropriate between 150 feet E/Stockton Street and Cherokee Lane i n accordance with the 85th percentile speed, unexpected conditions and accident data. The table below shows the recommended speed limits: Qi121 : is, *%fi= Church Street - 150 feet E/Stockton Street 150 feet E/Stooton Street - Cherokee Lane JeLRonskio kj_W4PDirector SPEEDZ05/TXTW.02M EX 1STING RECOMMENDED 30 mph 30 mph 30 mph 35 mph RESOLUTION NO. 92-98 A RESOLUTION OF THE LOD! CITY COUNCIL APPROVING SPEED L lei (T HQU I E (CAT [ON ON LOCKEFORD STREIR FROM 150 FEET EAST OF STOCKTON STREET TO CHEROKEE LANE, THERE � ANENO W TRAFFIC RESOLUTION NO. 87-163 ==��Crizaaa=aacc=sm�a=c=LSSsss�':.sx3�.;�sss�i[zsWs�assssa=sus;as�as�SS=ss= RESOLVED. that the Lodi City Council drer hereby approve the proposed speed limit changes on Lockeford Street from 150 feet east of Stockton Street to Cherokee Lane, a distance of 2.180 feet, from 30 miles per hour to 35 miles per hour, as shown on Exhibit A attached hereto; and BE IT FURTHER RESOLVED, that City of Lodi Traffic Resolution 87-163, Section 7 - Speed Limits is hereby amended by changing the speed limit from 30 miles per hour to 35 miles per hour on Lockeford Street from 150 feet east of Stockton Street to Cherokee Lane, a distance of 2,180 feet. Dated: Hay 20, 1992 xWs=xosg�Tz.-rzRasL2a3sgz3sC«x»4zz.T.ss=-,Zaasscxsss=sss=ma;ssv-Csa-�SSsss I hereby certify that Resolution No. 92-98 was passed and adopted by the Lodi City Council in a regular meeting held May 20, 1992 by the following vote: Ayes: Noes: Absent: RES9298/TXTR.02J Council Members - Hinchman, Pennino. Sieglock and Pinkerton (Mayor) Council Members - None Council Members - Snider Alice M. Reimcne City Clerk 92-98 WILL � I I ; � �a�� •-11 I�� E l��q a i0l zl ��- � a �ppp yy6t y� !Cl= W I� qj2 fli r 0 O c� W .. o L' Ell OR 1 I I 4 i tn i tq i r /ro� irs+S7 Y`t �I RY Its } i ; ��t E i ! 4y Ik k f I 3 1111 ii � 4 i + 4 WILL � I I ; � �a�� •-11 I�� E l��q a i0l zl ��- � a �ppp yy6t y� !Cl= W I� qj2 fli r 0 O c� W .. o L' Ell OR