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Home My WebLink AboutAgenda Report - April 17, 2013 C-22AGENDA ITEM Cott CITY OF LODI (1) COUNCIL COMMUNICATION TM AGENDA TITLE: Adopt Resolution Amending Traffic Resolution No. 97-148 by Approving a 30 Miles -Per -Hour Speed Limit on Church Street from Lockeford Street to Turner Road MEETING DATE: April 17, 2013 PREPARED BY: Public Works Director RECOMMENDED ACTION: Adopt resolution amending Traffic Resolution No. 97-148 by approving a 30 miles -per -hour speed limit on Church Street from Lockeford Street to Turner Road. BACKGROUND INFORMATION: Staff recently reviewed Engineering and Traffic Surveys (ETS) on the following 12 streets: Beckman Road, Brandywine Drive, California Street, Central Avenue, Cherokee Lane, Church Street, Elm Street, Harney Lane, Hutchins Street, Lodi Avenue, Pine Street and Tokay Street. Based on the State -mandated requirements, staff is recommending decreasing the existing speed limit from 35 to 30 mph on Church Street from Lockeford Street to Turner Road. No changes are recommended on the other streets. The ETS include three primary factors when establishing posted speed limits: prevailing speeds, accident rates, and unexpected conditions. Other characteristics, such as residential density, pedestrian and bicycle safety, and roadway design speed, are also considered. The Police Department staff concurs with staff's recommendations. As shown in the attached Church Street ETS, the recommended posted speed limit is based on the prevailing speeds (85th percentile speeds) and accident rate similar to the Citywide average rate. All the updated ETS are on file at the Public Works Department. FISCAL IMPACT: Normal maintenance only. FUNDING AVAILABLE: Funding for the sign and legend installation/removal is from the Street Maintenanc Account (3215031), totaling approximately $800. Jordan Ayers Deputy City Manager/Internal Services Director F. Wally ndelin Public Works Director Prepared by Paula Fernandez, Transportation Manager/Senior Traffic Engineer FWS/PJF/pmf Attachments cc: City Attorney Police Chief Police Lt. Jacobsen Deputy Public Works Director/City Engineer Utility Superintendent amity Manager K:\WP\TRAFFIC\cspeedsurvey2013.doc 4/8/2013 April 2013 SPEED ZONE REPORT - Church Street ° REFERENCE - Speed zone surveys are performed in the City of Lodi following the Federal Highway Administration MUTCD and MUTCD California Supplement in accordance with Section 40802 (b) of the California Vehicle Code. ° STUDY CRITERIA - 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 (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 nearest five mile per hour (mph) increment to the 85th percentile speed. However, in matching existing conditions with the traffic safety needs of the community, engineering judgment may indicate the need for a further reduction of five mph. Accidents - Accident records for two recent years were considered in determining the 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 average Citywide accident rate is 3.0 ACC/MVM. Unexpected Conditions — Highway, traffic, and roadside conditions not readily apparent to the driver were considered. When roadside development results in traffic conflicts and unusual conditions which are not readily apparent to drivers, speed limits below the 85th percentile may be justified. Other Factors - The following factors were considered: residential density, pedestrian and bicycle safety, 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. ° STUDY RESULTS Twelve radar surveys were performed and the 85th percentile speeds ranged from 30 to 40 mph as shown below: Street Segment Century Boulevard to Kettleman Lane Kettleman Lane to Tokay Street Tokay Street to Lodi Avenue Lodi Avenue to Lockeford Street Lockeford Street to Turner Road Northbound 39 mph 38-40 mph 40 mph 30 mph 33 mph Southbound 39 mph 39 mph 40 mph 31 mph 34 mph Century Boulevard to Kettleman Lane The 85th percentile speed on this segment is 39 mph. The 50th percentile speeds are 35 and 36 mph. The accident rate of 5.3 on this segment is higher than the Citywide average and lower than the 8.2 rate from the 2006 survey. Based on the 85th percentile speed, high accident rate and residential density, we recommend retaining the 35 mph speed limit in this segment. K:\TRAFFIC\SPEEDZN\2013\Church2Ol3.doe Kettleman Lane to Tokay Street The 85th percentile speeds on this segment range from 38 to 40 mph. The 50th percentile speeds range from 33 to 36 mph. The accident rate of 1.9 on this segment is lower than the Citywide average and lower than the 7.1 rate from the 2006 survey. Based solely on the 85th percentile speeds, the speed limit could be set at 35 or 40 mph; however, due to the lower accident rate and residential density, we recommend retaining the 35 mph speed limit in this segment. Tokay Street to Lodi Avenue The 85th percentile speed on this segment is 40 mph. The 50th percentile speed is 35 mph. The accident rate of 2.6 on this segment is lower than the Citywide average and the 4.3 rate from the 2006 survey. Based solely on the 85th percentile speeds, the speed limit could be set at 40 mph; however, due to the lower accident rate at the current speed limit and residential density, we recommend retaining the 35 mph speed limit in this segment. Lodi Avenue to Lockeford Street This portion of Church Street is comprised of five short segments that have been reviewed together given the similarities in speeds and traffic volumes. The only segment long enough to provide an accurate survey is the segment between Elm Street and Lockeford Street. The 85th percentile speeds on this segment is 30 and 31 mph. The 50th percentile speeds are 26 and 28 mph. Four of the five segments are one block long with each intersection controlled by traffic signals. The fifth and longest segment, between Elm Street and Lockeford Street, is two blocks long and includes the uncontrolled intersection at Locust Street. The accident rate in the four one -block segments range from 0.0 to 7.5, with the two -block segment rate at 9.3. The higher rate in this block is due to accidents occurring at Locust Street. The intersection review indicated the primary factor and cause of the collisions involved motorists failing to yield to other vehicles. Based on the 85th percentile speed and accident rate, we recommend retaining the 30 mph speed limit in these segments. Lockeford Street to Turner Road The 85th percentile speeds on this segment are 33 and 34 mph. The 50th percentile speeds are 29 and 30 mph. The accident rate of 3.0 on this segment is at the Citywide average and lower than the 4.6 rate from the 2006 survey. Based solely on the 85th percentile speed, the speed limit could be set at 30 mph. Due to the prevailing speed and average accident rate, we recommend reducing the speed limit to 30 mph in this segment. ° CONCLUSION The recommended speed limits are shown below: SEGMENT Century Boulevard to Kettleman Lane Kettleman Lane to Tokay Street Tokay Street to Lodi Avenue Lodi Avenue to Lockeford Street Lockeford Street to Turner Road Paula Fernandez Transportation Manager/Sr. TE K:\TRAFFIC\SPEEDZN\2013\Church2Ol3.doe POSTED SPEED LIMIT 35 mph (no change) 35 mph (no change) 35 mph (no change) 30 mph (no change) 30 mph (from 35 mph) 2900' 1 2600' 1 1400' 1 1400' 1 600' 450' 1 450' 1 450' 1 900' 1 2850' CIVVIIVCCRIIVV ' AND TRAFFIC SURVEY ? z o a SEE NARRATIVE FOR 0 I_ > r N o w BACKGROUND INFORMATION L w ¢ v w LU r w i0 z ¢ Z Q• W U W F H- � R � ��.-J Ia-1 cn Rt -1 R1-1 0_ m zcn x ]{' U N v�t W N U i I R1�1 Rt -1 i(�l q ��J�I _ _ _ R1T v �, U �. N J K_ J 3 � � �A1.1 1.1 1.y ` L■ -y! py,1 R1-1 r f R1-1 !e 11 py�� 71 yry{1 �yl��j' U,: 1p � rc q R11 it } f^��{�L-1LJ 1 L■ I/A.7�1j�W 1 I 11 1 R!'t X1.1 SOQ N _ W W CHURCH STREET p 0 O L_ UU W y O U O J 1/2 MILE 1/2 MILE 112 MILE 1/2 MILE 1/2 MILE SPEED TABLE ROADWAY WIDTH 40'-44' 50' 60'-64' 53 NO, OF LANES 2+8ike Lanes 4— —I 2. MEDIAN [TYPE) NONE TRAFFIC SIGNAL DATA B IACl SspACT 208EA11A . 20ACT 20SEMIACT 20FIXED 60ACT AVERAGE DAILY TRAFFIC 5,150 &.79A MUM k880. 7.01M 8,730. 4.300 OBS. SPEED-CRITICAL,$9m NB 39 40 38 40 30 33 SB 39 39 39 40 31 34 -PACE(%) NS 30-40(74) 32-42.{87) 27-37.(73) 31-41 (SS) 22-32(84 24-34 VO). $8 31-41 (78) 31-41(74) 29-39(73) 31-41 (M) 23-33 (W0 25-35 {7$) -MEDIAN,$Ot % NB 35 36 33 35 26 29 SB 36 35 35 35 28 30 EXISTING SPEED ZONE 1 35 MPH — — ►F� 30lAPH 36 MPH 1 PROPOSED SPEED ZONE 35 MPH — 30.MPH 30MpH �I LEGEND: MPH SPEED GRAPH - f. :1L _, T .SIGN LOCATION .1 i �. - I !!!I T r 7 I -`-_ _ _ "'-- .. r - .. •- - - - • �- .� . —. R1-1 STOP SIGN 40 .. t-�_ .-.. 4 I _ _ - -u)enwralolrprrq R1-2 -YIELD SIGN C-ASSEMBLVC 1 -- ( •�;�- .,1., _,-I _ _� _ :f • �_�_.i _ _. _ .._ _ .. .��ti _ ._ _ .. (SCHOOL25 MPH SIGN) WI _x -CURVE WARNING SIGN_I-i-.. �O_-�•I .� [ �.J '_ _1 .i - ( i j .. II - _.. _ ___ _ —.— -, -. _. _ — ._ _ —_ —.— ___..— —_ _._. —_— _� — W13-1() -CURVE ADVISORY SPEED .I- ---. •� r[� ) ,_ -� .. .. ... I _. _ .- -. -- .._ - — —. -TRAFFIC SIGNAL 20 I I -CITYLIMR 1 _ j .. -i :.yf i 4 • ...-� _ --L�R�LIMITOF PACE .. I ` _ ACCIDENT PLOT YR: 2011 1 1 1 1 2 1 1 1 0 0 0 1 1 3 1 2 1 1 YR: 2012 2 1 1 1 1 1 1 1 1 1 12 1 0 1 0 1 1 1 1 1 1 1 ACCIDENT RATE-ACC./MILL. VEH: MI. 5.3 1.9 2.6 1.4 OA 1 0.0 17.5 1 9.3 1 3.0 PP Appro etl9y CITY O F LO D —F SPEED PJF is CHURCH ST ZONE glyR APRIL 2013 Trnnepa 'mManegerISrTr�cEnginear o> TR 1625 PUBLIC WORKS DEPARTMENT — SURVEY RESOLUTION NO. 2013-62 A RESOLUTION OF THE LODI CITY COUNCIL AMENDING TRAFFIC RESOLUTION NO. 97-148 BY APPROVING A 30 MILES -PER -HOUR SPEED LIMIT ON CHURCH STREET FROM LOCKEFORD STREET TO TURNER ROAD WHEREAS, staff has recently updated Engineering and Traffic Surveys on Church Street; and WHEREAS, staff recommends the speed limit be reduced from 35 miles per hour to 30 miles per hour between Lockeford Street and Turner Road. NOW, THEREFORE, BE IT RESOLVED that the Lodi City Council does hereby approve the speed limit reduction from 35 miles per hour to 30 miles per hour on Church Street between Lockeford Street and Turner Road; and BE IT FURTHER RESOLVED that the City of Lodi Traffic Resolution No. 97-148, Section 7, "Speed Limits," is hereby amended by reducing the speed limit on Church Street between Lockeford Street and Turner Road from 35 miles per hour to 30 miles per hour. Dated: April 17, 2013 I hereby certify that Resolution No. 2013-62 was passed and adopted by the City Council of the City of Lodi in a regular meeting held April 17, 2013, by the following vote: AYES: COUNCIL MEMBERS — Hansen, Johnson, and Katzakian NOES: COUNCIL MEMBERS — None ABSENT: COUNCIL MEMBERS — Mounce and Mayor Nakanishi ABSTAIN: COUNCIL MEMBERS — None I JOHL City Clerk 2013-62