The URL can be used to link to this page

Home My WebLink About1994-08-01; Traffic Safety Commission; ; Review recently established 30 mile per hour prima facie speed limit on the subject segment Tamarack AvenueCI1Y OF CARLSBAD TRAFFIC SAFE1Y COMMISSION STAFF REPORT COMMISSION MEETING OF: August 1, 1994 ITEM NO. 6B LOCATION: Tamarack Avenue -Carlsbad Boulevard to Interstate Highway 5 INITIATED BY: City Council REQUESTED ACTION: Review recently established 30 mile per hour prima facie speed limit on the subject segment of Tamarack Avenue. BACKGROUND: DATA: In November 1993, staff conducted an Engineering and Traffic Survey on the subject segment of Tamarack Avenue in order to establish a prima facie speed limit. The survey was required because of recent improvements to the roadway. Based on the results of that survey, staff recommended that a 30 mile per hour prima facie speed limit be established. The matter was then discussed by the Traffic Safety Coordmating Committee and the Traffic Safety Commission who both agreed with staffs recommendation. Subsequently, on January 18, 1994, the City Council adopted an ordinance to establish a 30 mile per hour prima facie speed limit on the subject portion of Tamarack Avenue, but also requested that staff return to the Traffic Safety Commission in six months with new speed survey results in order to re-evaluate the speed zone. Staff has completed an updated Engineering and Traffic Survey for the portion of Tamarack Avenue from Carlsbad Boulevard to Interstate Highway 5 (survey attached). Table 1 below lists the results of both the former speed surveys and the recent ones. 11-16-93 0.1 Mi. e/o Garfield Street 26-36 MPH 87% 34MPH 7-12-94 400' e/o Garfield Street 26-36 MPH 86% 34MPH 11-16-93 Hibiscus Circle 26-36 MPH 92% 34MPH 7-12-94 @ Hibiscus Circle 27-37 MPH 84% 35MPH RECOMMENDATION: The Traffic Safety Coordinating Committee recommends that the prima facie speed limit upon Tamarack Avenue from Carlsbad Boulevard to Interstate Highway 5 remain at 30 miles per hour. NECESSARY CI1Y COUNCIL ACTION: No City Council action is required. LOCATION l,,-1 ,<J ,y 1' ly/'<9 ~S'c i1t Z-11; }' ~ • ~0 'x' ('f:)' {:)'~~i ~:i ~ MAP C'"I? PROJECT NAME TAMARACK AVENUE EXIST ING 30 MPH SPEED ZONE EXHIBIT 1 STREET: Tamarack Avenue CITY OF CARLSBAD ENu1NEERING AND TRAFFIC Sl.Jnv'EY . DATE: 07/21 /94 LIMITS: Carlsbad Boulevard to Interstate Highway 5 A. Prevalllng Seeed Data: Date of Speed Survey Location of Speed Survey 85th Percentile 10 MPH Pace Percent in Pace Posted Speed Limit B. Accident Hlstorv: (6/1/92 to 5/31/94) Speed-Related Accidents Total Accidents Acc./Million Veh. Miles C. Traffic Factors: Average Daily Traffic Traffic Controls Pedestrian/Bicycle Traffic Bicycle Lanes On-Street Parking Other 0. Roadwa~ Factors: Street Classification Design Speed Length of Segment Roadway Width Number of Lanes Vertical Alignment Horizontal Alignment Sidewalks Driveways Street Lighting E. Adjacent Land Uses: 4 Direction: Eastbound/Westbound 7/12/94 400' East of Garfield Street 34 MPH 26 to 36 MPH 86% 30 MPH 12 (2 occured in Construction Zone) 2.36 Direction: Eastbound/Westbound 7/12/94 At Hibiscus Circle 35 MPH 27 to 37 MPH 84% 30 MPH 8,700 -East of Garfield Street on 9/7/93; 14,500 -Between Jefferson Street and 1-5 on 3/24/92 Traffic Signals at Carlsbad Blvd., Jefferson St., & 1-5 SB Ramps; Stop Sign Control @ Garfield St. Moderate Bicycle Lane on Each Side Between Garfield Street and railroad in designated areas Truck Route; Bike Route per Circulation Element of the General Plan Collector 30 MPH 0.6 Mi. 44 to 82 Feet 2 to 4 Lanes Roadway Grades Vary between 0.92% and 5.88% Relatively Straight Sidewalk on Each Side Numerous Closely Spaced Driveways Limited Street Lighting Freeway, Residential, Commercial, School, Railroad, Beach F. Remarks: This section of Tamarack Avenue serves as a connection between Interstate Highway 5 and Carlsbad Boulevard, which is a major arterial that fronts the Pacific Ocean. As such, this portion of Tamarack Avenue is heavily used by pedestrians and bicycles as a route to the beach. It is also on the Suggested Route to School for kindergarten through third grade students attending Jefferson Elementary School. Travel lanes are either separated by a two-way left turn lane, a painted median, or a raised, landscaped median throughout the segment. Between 1-5 and Linmar Lane, there are two lanes in each direction. West of Linmar Lane, the roadway narrows to only one lane in each direction. The San Diego Northern Railway railroad tracks cross Tamarack Avenue with the segment at which point there is a crossing gate. G. Traffic Engineer's Recommendation (Explanation): This speed zone satisfies the conditions of Section 627 of the California Vehicle Code and has been prepared and evaluated in accordance with the CAL TRANS Traffic Manual with respect to design and prevailing speeds, accident history, pedestrian activity, driveway spacing, stopping sight distance, and roadway and traffic conditions. A speed limit posting of ~ MPH is found to be appropriate and justified. NOT!=· Annrnnri::itA ~need survev(s) is/are attached hereto and made a oart hereof. CITY OF CARLSuAD s~ cED SURVEY DATE: 7·12 • 9'( TIME: 9:ss to /(2:2s A.M. TOTAL VEHICLES: /(JO WEATHER: Goon CRITICAL SPEED: 3f' MPl LOCA~ON: 7?9'1A&l_c/[_ dfLe./{/£')(, ftb I £a GA~/Et/J PACE SPEED: Eb to 36 MPl I ST/?EET OBSERVER/RECORDER: J'w'G CARS IN PACE: B_b Posted Speed Limit: 3() MPH EB w'B Direction of Travel Direction of Trave MPH IJ '7-r: IJ '7-.. ; 1' ,., l MP 165 £,~ 64 6J. 63 6~ 62 6, 61 61 60 6( 59 51 58 5! 57 -· Si 56 51 55 5~ 54 54 53 s: 52 Si 51 5' 50 5( 49 41 48 4! 47 4i 46 41 45 4~ 44 41 43 4; 42 4i 41 I I Inn 2 I IX 4' 40 4( 39 :::! ,!:-' fi"rl/ I( .e. y IX 31 38 lllr p -,7 31 37 ,;:; J ,.> ) 'j 2 1_,1 3i 36 .;_ ~ 'I ~ . IX ,X I .I-' 31 35 ) i,I ) r s f ') 2 , 3! 341 .... I/ i_) ,) 1 I ,, ~ 4~ LX X ;y 1..11 ,) J 31 . 33 IY I) ) ., l X I)( IX I)( ' ' I:? j ~ 7 j ' I_,. J , 3; 321.) I.A' J Jr , I 1 ,3 ~ , ~ I.X .x xr) , 3i 31 . 'I' s IX IX l}I ., 3' 30 J .. ~ 7 -1 J _,-X IX ..J 31 29 _) IX )( IX IX X 7 I HJ HJ ",I. ; i.) ,~ ... ,,, 2c 28 fY )(' ,'.j J ~"'!' ~ ◄ Yi/ L)i ,. 21 27 X .:: ., 'I 'I I.A"' ,..,.---1..1 ,,. 2: 26, 1 ..... X ~ I i," 6,." I. ,~ .:J ,_; 1 .... J 2, 25 l.;c 1_; ,;,I I/ I/ 'I V .2. >,,'~ 2~ 24 21 23 2: 22 2i 21 2· CITY OF CARL&!AD S~ED SURVEY DATE: __._7_·.;..._/2----'• 9__,_7' __ to f:.StJ d ,M. TOTAL VEHICLES: __ /-=Oi ..... 6'"--_ • WEATHER: ___ -16;11C....X/Ji;.J,o~i;..:f}~---------CRITICAL SPEED: ___ 3 __ 6 __ MP: PACE SPEED: 2 7 to 3 7 MP: OBSERVER/RECORDER: _____ J"" ___ ~-----~-------CARS IN PACE: __ jJ"""--"f __ _ Posted Speed Limit: .3tJ MPH v/8 EB Direction of Travel Direction of Trave MPH fl 1. r: fl 1. • i, t> ~ ; MP ..... If.I 64 16' 63 6: 62 6: 61 6' 60 61 59 5c 58 51 57 .◄ 5· 56 51 55 51 54 5, 53 5: 52 5; 51 5 50 51 49 4, 48 41 47 4· 46 41 45 41 44 4, 43 4: 42 4. 41 I I I rx~ ◄' ¥4 40 X I ~ ~ .-7 •q 1 .)(' 41 39 X X 2 " .::l , .. ~ ..,, 3, 38 ,. .. ~ X 3, 37.) IX IA 1 I .::. -;; ' 3 36 ) .x IA fl 7 -"· b ~ I..X IX IA" 31 35 'Y IA I/ ,--:r ~ I i...J( 3' 34 'IA X X IA" IX :, I L':J J > '1; n J, y I.X 1.,.1 I.Ji .... 3. 33 1 • :> _r I ,4 ~ -1.,.1 I)"' 1X 3 32 I.J 1,1 IX /\1)1 .i( !A :, r.i:! J ~ j J..., .., -lA IX I/ lY .,,. 3. 311.)c 1..)11 j_)(" 1.)( I JI .4-,, ~ , ' -~ I -· .) IY 3 30 1,,, I) !Y )I ). ...-~· j y I 'I C / / J , X IX I.Y IX I.X 'JI ', , ... 3 29 4{ 'f 27 j / _.) _.) ,, ) 2 28 .)(' l" V X X t5" I, I I ~>=I / > e IA ..)(' ""' _,l )c .)-2 27 l) .J' ~ ' • J. j f',,! • 41 )c .) ~ l)l 2 26 _,, J ,II. " I( je, I .:.1 J' J 2 25 Jc I .. j~ 2 ~~ ..l' J( 2 24 2 23 2 22 2 21 2 Plmlil H CQl4J§IQH 9-13-92 4-13-93 3-28-94 5-03-94 TABLE A1 INTERSECTION COLLISIONS June 1, 1992 through May 31, 1994 TAMARACK AVENUE AT CARLSBAD BOULEVARD PDO INJ PDO INJ PAiAAlttY eoccts.tou u FAGIPRt~i > ESS RSS RSS DWI-RSS TABLE A2 HIT AND RUN HIT AND RUN TAMARACK AVENUE AT GARFIELD STREET eaiMlill!o~~~§!!I fAQ!QB(~l t -NO COLLISIONS- TABLE A3 TAMARACK AVENUE AT HIBISCUS CIRCLE leiMlllggµiji~~gi > EAQIQfl(§) > -NO COLLISIONS-- TABLE A4 TAMARACK AVENUE AT LINMAR LANE --NO COLLISIONS- TABLE AS INTERSECTION COLLISIONS June 1, 1992 through May 31, 1994 TAMARACK AVENUE AT JEFFERSON STREET Aitrl2I r cqµy§!PN m 2-10-94 VRW-ESS HIT AND RUN TABLE A6 TAMARACK AVENUE AT INTERSTATE 5 SOUTHBOUND RAMPS Pir!Pe IQQ4$)QN J 11-06-92 11 -25-92 2-18-93 4-05-93 10-07-93 12-10-93 12-21 -93 PDO INJ PDO PDO INJ PDO PDO eaiMiax 9PbmiJII i El§TQB(§) > RSS RSS-INATT RSS-ESS RSS-INATT RSS-INATT RSS-VO RSS-INATT RAIN TABLE 81 MIDBLOCK COLLISIONS June 1, 1992 through May 31, 1994 TAMARACK AVENUE: CARLSBAD BOULEVARD TO INTERSTATE HIGHWAY 5 6-28-92 225' W/O HIBISCUS CIR PDO DWI-FTC HIT & RUN 7-31 -92 85' E/O GARFIELD ST PDO DWI-IT 8-15-92 78' E/O CARLSBAD BLVD PDO IP 11-07-92 40' W/O GARFIELD ST PDO IS-VO 11 -21 -92 17' W/O 1-5 SB RAMPS PDO DWI-WS 3-04-93 240' W/O RAILROAD TRACKS PDO ESS-FTC-INA TT CONST. ZONE 4-14-93 6' E/O 1-5 SB RAMPS PDO IT-INATT 6-08-93 E/O CARLSBAD BLVD PDO ESS CONST. ZONE, WET 7-02-93 400' W/O RAILROAD TRACKS PDO IT-INATT 10-31-93 66' W/O GARFIELD ST PDO IT-HBD 11 -21-93 20' E/O JEFFERSON ST PDO ESS 2-20-94 50' W/O HIBISCUS CIR INJ VRW-ESS-VO LEGEND CONST DPD DV DWI ESS FTC HBO H&R IB ILC INJ .IP IS IT INATT M/C 0TH PED PDO ROR RSS SFP UDI UNK UWR VO VRW ws CONSTRUCTION ZONE DRIVER PHYSICAL DEFECT DEFECTIVE VEHICLE DRIVING WHILE INTOXICATED EXCEEDING SAFE SPEED FOLLOWING TOO CLOSE HAD BEEN DRINKING HIT AND RUN IMPROPER BACKING IMPROPER LANE CHANGE INJURY IMPROPER PASSING IMPROPER START IMPROPER TURN INATTENTION MOTORCYCLE OTHER PEDESTRIAN PROPERTY DAMAGE ONLY RAN OFF ROAD RAN STOP SIGN OR SIGNAL STOPPED OR SLOWING FOR PEDESTRIAN UNDER DRUG INFLUENCE UNKNOWN UNFAMILIAR WITH ROAD VISIBILITY OBSTRUCTED VIOLATED RIGHT OF WAY WRONG SIDE OF STREET -=--