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Home My WebLink About1993-12-06; Traffic Safety Commission; ; Establish a prima facie speed limit on the subject segment of Tamarack Avenue.CI1Y OF CARLSBAD TRAFFIC SAFElY COMMISSION SfAFF REPORT COMMISSION MEETING OF: December 6, 1993 ITEM NO. _filL LOCATION: Tamarack Avenue -Carlsbad Boulevard to Interstate Highway 5 INITIATED BY: Traffic Engineer REQUESfED ACTION: Establish a prima facie speed limit on the subject segment of Tamarack Avenue. BACKGROUND: DATA: Construction on Tamarack Avenue between Carlsbad Boulevard and Interstate Highway 5 has recently been completed except for utility pole removals. Poles are scheduled to be removed by December 15, 1993. This survey is required to establish a prirna facie speed limit. Sections 22357 and 22358 of the California Vehicle Code authorizes local authorities to establish a prima facie speed limit on the basis of the results of an engineering and traffic survey. The engineering and traffic survey considers such factors as the number of collisions that have occured on the road segment, roadway features, traffic volumes, pedestrian volumes, adjacent land uses, driveway locations, critical speed and conditions that may not be readily apparent to the driver. Staff has completed an engineering and traffic survey for the portion of Tamarack Avenue from Carlsbad Boulevard to Interstate Highway 5 (survey attached). RECOMMENDATION: The Traffic Safety Coordinating Committee recommends that the prirna facie speed limit upon Tamarack Avenue from Carlsbad Boulevard to Interstate Highway 5 be established at 30 miles per hour. NECESSARY CI1Y COUNCIL ACTION: An ordinance will be required to be adopted by the City Council to establish the prima facie speed limit as recommended. LOCAT ION <:'(';- ~ ~&-'x't,.; ci5~ 'x' l,,p A/ MAP PROJECT NAME T AMARACk AV ENU E PROPO SED 30MPH SP EED ZONE EXHIBIT 1 STREET: Tamarack Avenue CITY OF CARLSBAD ENu1NEERING AND TRAFFIC SlJn.JEY DATE: 11 /17/93 LIMITS : Carlsbad Boulevard to Interstate Highway 5 A. Prevalllng S2eed Data: Date of Speed Survey Location of Speed Survey 85th Percentile 10 MPH Pace Percent in Pace Posted Speed Limit B. Accident Hlstorv: (10/01/91 to 9/30/93) 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 D. Roadwa~ Factors: Street Classification Design Speed Length of Segment Roadway Width Number of Lanes Vertical Alignment Horizontal Alignment Sidewalks Driveways Street Lighting E. Adtacent Land Uses: 4 13 2.56 FACTORS Direction: Eastbound/Westbound 11/16/93 0.1 Mi. East of Garfield Street 34 MPH 26 to 36 MPH 87% None Direction: Eastbound/Westbound 11/16/93 At Hibiscus Circle 34 MPH 26 to 36 MPH 92% None 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 area 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 students attending Jefferson Elementary School. Travel lanes are either separated by a two-wf!tf left turn lane, a painted median, or a raised, landscaped median throughout the segment. Between 1-5 and Unmar Lane, there are two lanes in each direction. West. of Unmar Lane, the roadway narrows to only one lane in each direction. The Atchison, Topeka, and Santa Fe Railroad crosses Tamarack Avenue within the segment at which point there is a crossing gate. G. Traffic Engineer'• Recommendation (Explanation): This speed zone satisfies the conditions of Section 62.7 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, drivewf!tf spacing, stopping sight distance, and roadway and traffic conditions .. A speed limit posting ~ 30 MPH is found to be appropriate and justified. •· H~ A~iji~,r~~ <•••••••••t•••<•.•····•••··•··· \ .. i~ili1ti:rl:iiilllil.~lr!!~~ic'if111:. NOTE: Appropriate speed survey(s) is/are attached hereto and made a part herP. ' CITY OF CARLS,AD DATE: _...L.lll--·...L.1 ...... 6_· ""'-"t/.3=---TIME: 9 ;.30 &,tJ.to /0 :1s A,/tf, TOTAL VEHICLES: _ ___._I a.;;;...~,;;___ __ _WEATHER : ____ ....,,G......__o_o'-'-D'------------ H 181.sc tJ.s LOCATION: _ ...... 7: ..... A_M_._,,'..1 .... R+-'Ae ....... lC .... -__,._l"J~~:...:'Ei:£.IIM ..... v'-=£'--+'@,.,,..._ ____ c ..... 11< ........ c ___ L....,.E_ OBSERVER/RECORDER: ____ ~J~½/_.___& ______ _ CRITICAL SPEED: __ 3;;;;;.....4,f __ MPH PACE SPEED: 2. G to 3G MPH CARS IN PACE: __ _._9c_~=----% Posted Speed Limit: NONE MPH Di rection of Travel Direction of Trave l MPH fl '7-fl '7.: i 1 , " i MPH ,~ 6~• 164 I 1 63 63 1 62 62 161 61 160 1 160 I ' 59 I 59 58 158 I 57 57 561 !56 55 155 54 54 53 153 152 52 Is, I 151 501 150 49 149 48 48 47 47 46 146 I . 45 45 44 44 43 143 42 42 41 41 40 40 39 r I I e,o < .A 39 38 ~ 1 '<:'. ? .2 '( ., ~ ,, 38 [37 I ~ 9 2 II .:.~ ) 37 136 ~ I ~ '::t 3 ' !i' '{ .? ~ ~ 36 1 35 ., .2. I ,:;-,', ' ::> -~ XI)! l 35 34 "' YJI.. ., I)( (;; J;:, I I J7 0 r y .)I" X I.) ~ 34 33 } IX ll c; " 3 '3 •t:. ,., '1 X V U( )('" X )(' ~ ) 33 32 1) lf I} l I') C: ~ .( ..; p I X X IX L,'I[ IA .K Jt' X Ii' )(") 32 31 U J"'IJo l.X II\: l( X ,, ~ I 'I -1 I .e.• K ) 31 30 ~ )i I • ~ 7 7 i,~ t. l .x Ir' 30 29 1 I( , ) IX _, )0 J,,, /(J " ., /(') ' I.A X X ~{'" 29 28 'i )I )I ~ ~ -7 ' i:;' 3 )( ~ I,, 28 27 ~ I) ,; ::J ... 5 ,e. I{ 2 y 27 .,;) 26 X I.JI J "' ". ' C: 7 I{ ~ x 26 25 :X I e. :;:; .2. 2 £ I 1)1 25 24 24 23 23 22 22 21 21 CITY OF CARLSBAD SPEED SURVEY DATE: -----'-l"'-L ·-'-/2-=--C__.· f-=3 __ TIME: /~1'2SA,/tf_to J/.'/1) d·M. TOTAL VEHICLES : __ /i...a:;(2_,.t,'---- WEATHER: _____ G_M.......,'£) ___________ _ CRITICAL SPEED: _ __.,3___._f __ MPH LocAT ioN: TLJ.t:1Af?AcK ,6/IIEA/1.,1£ % .I Mt. 9h .. > GAJlflEl,t") PACE SPEED: 2.. b to 3 G MPH S7. OBSERVER/RECORDER: ____ ~,-lWL:.-1,j~---------CARS IN PACE: __ ..,_9'--,71--__ % Posted Speed Limit: NON~ MPH £8 v/B Direction of Travel Direction of Trave l MPH fl '-'. r: fl 7. '; , ' ., l MPH ,~ 165 • 164 I 1 63 63 ; 62 62 161 61 60 160 59 59 58 158 57 57 56 156 55 155 54 54 53 153 52 152 51 51 50 1 50 49 49 48 48 47 47 46 46 45 45 44 44 43 43 42 42 41 41 40 40 39 39 38 I I Jn/'J '} ' 38 37 I I l'f/ ,P 37 36 l I p I{ " ''II r 1 y y 36 35 J y ~ 1./ c:. f,' C I/ j y 7 35 34 ,;, y 1 Y -;;i ~ I I II J R 0 X A X Jt".l IX"u ,, 34 33 J I .2 t:: s - 7 ~ X 1,1 -~ 33 32 ..) IX X .., JO '2 12 '7~ I 7 X y I.Y JI x 1.,, Jc 32 31 ~ r; :: C: h f, fr> , ' -~ fX..l IJI 31 30 ) ) I( X '2. //'J ·~ ~~ ) ~ IX Ix' J 30 29 ·;;. ~ j X 'A y ., 'G '2. ~ I I p j Ix Ix; 29 28 ) ) , '0 R ~ 7 -~ I IX .1 ) 28 ..:; 27 ) X ) X',X 7 J" i i J ,.,.;, I ' X y .1, i) 27 26 rx) X l)c ' J! G 10 ' ~CJ Ix 26- 25 IA,.-IX 1 b s 5 7 I J v )(' 25 24 IA ) ~2 If 2 c 2 24 23 23 22 22 21 21 3-31-92 9-13-92 4-13-93 :•:•:•:-:-:-:::::::::::::::::::.::::::_::::::::::-:::::::-:-:::::::::::=:-:::::::::-:-:-. t•••••••:••Pir~•qt ?· r•••t ollJSlbN r· TABLE A1 INTERSECTION COLLISIONS October 1, 1991 through September 30, 1993 TAMARACK AVENUE AT CARLSBAD BOULEVARD INJ OTH-INATT BIKE, RAIN PDO ESS HIT AND RUN INJ RSS TABLE A2 TAMARACK AVENUE AT GARFIELD STREET --NO COWSIONS-- TABLE A3 TAMARACK AVENUE AT HIBISCUS CIRCLE --NO COWSIONS- TABLE A4 TAMARACK AVENUE AT LINMAR LANE --NO COWSIONS- TABLE AS INTERSECTION COLLISIONS October 1, 1991 through September 30, 1993 TAMARACK AVENUE AT JEFFERSON STREET .-.-.·.·.·.·,•.·.·.· .. ·.·••••················<···c,·.·.·.·.·.·.·,·,.-· q~j;gg§: ·••··••>••coCLJSIQN >•• 12-08-91 PDO VRW RAIN 12-28-91 INJ DWI-ESS-INA TT TABLE A6 TAMARACK AVENUE AT INTERSTATE 5 SOUTHBOUND RAMPS 11-21-91 INJ 11-29-91 PDO 2-14-92 PDO 2-16-92 PDO 11-06-92 PDO 11-25-92 INJ 2-18-93 PDO 4-05-93 PDO fRIMQIY<99P4§lg~ < F~t;l'OFi(S) > RSS-DWI ESS-INATT RSS-INATT RSS-INATT ASS RSS-INATT RSS-ESS RSS-INATT WET RAIN TABLE 81 MIDBLOCK COLLISIONS October 1, 1991 through September 30, 1993 TAMARACK AVENUE: CARLSBAD BOULEVARD TO INTERSTATE HIGHWAY 5 10--03-91 115' E/O 1-5 SB RAMPS PDO ESS-INATT 10-26-91 75' E/O GARFIELD ST PDO IT-INATT-ESS RAIN · 11-25-91 300' E/O GARFIELD ST INJ IT 2-13-92 200' E/O GARFIELD ST PDO UNK WET 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 AT&SF RR 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 AT&SF RR TRACKS PDO IT-INATT LEGEND CONST DPD DV DWI ESS FTC HBO H&R IB ILC INJ IP IS IT INATT M/C 0TH PED PDQ ROR RSS SFP UDI UNK UWR VO VRW ws CONSTRUCTION ZONE DRIVER PHYSICAL DEFECT DEFECTIVE VEHICLE DRIVING WHILE INTOXICATED EXCEE DING SAFE SPEED FOLLOWING TOO CLOSE HAD BEEN DRINKING HIT AND RUN IMPRO PER BACKING IMPROPER LANE CHANGE INJURY IMPROPER PASSING IMPROPER START IMPROPER TURN INATTENTION MOTORCYCLE OTHER PE DES TRIAN PROPERTY DAMAGE ONLY RAN OFF ROAD RAN STOP SIGN OR SIGNAL STOPPED OR SLOWING FOR PEDESTRIAN UN DER DRUG INFLUENCE UN KNOWN UN FAMILIAR WITH ROAD VISIBILITY OBSTRUCTED VIOLATED RIGHT OF WAY WRONG SIDE OF STREET