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Home My WebLink About1994-12-05; Traffic Safety Commission; ; Establish a prima facie speed limit on the recently constructed portion of Avenida Encinas between Poinsettia Lane and Palomar Airport RoadCITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT COMMISSION :MEETING OF: December 5, 1994 ITEM NO. 6A LOCATION: INITIATED BY: A venida Encinas, Poinsettia Lane to Palomar Airport Road City Traffic Engineer REQUESTED ACTION: Establish a prima facie speed limit on the recently constructed portion of A venida Encinas between Poinsettia Lane and Palomar Airport Road. BACKGROUND: A venida Encinas is designated as a Secondary Arterial in the Circulation Element of the General Plan. Until recently, the roadway terminated at Hoehn Honda, about 3,000 feet north of Poinsettia Lane. On the northerly end, the roadway terminated south of the Encina Water Pollution Control Facility (EWPCF). With construction completing this "missing link" of A venida Encinas, there is now a two-lane roadway providing access between Poinsettia Lane and Palomar Airport Road. Prior to the new roadway construction, the southerly section of A venida Encinas had a prima facie speed limit of 35 miles per hour established in 1993. No prima facie speed limit has been established on the northerly segment. However, the segment of A venida Encinas from Palomar Airport Road to Cannon Road has a prima facie speed limit of 40 miles per hour. DATA: Construction has recently been completed on a 2,600 lineal foot segment of A venida Encinas that comprised the "missing link" of this roadway between Poinsettia Lane and Palomar Airport Road. The roadway has been constructed with one traffic lane in each direction on approximately one-half the right-of-way width.. In the future, A venida Encinas will be fully widened to its secondary arterial width and striped with four traffic lanes. The northerly segment of A venida Encinas from the Encina Water Pollution Control Facility to Palomar Airport Road also provides one traffic lane in each direction. This segment follows a linear alignment for a distance of 3,500 feet. 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. Staff completed the survey which is attached to this report. For purposes of establishing a prima facie speed limit, the roadway has three distinct segments for speed zoning. CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT COMMISSION MEETING OF: December 5, 1994 (continued) ITEMNO. 6A For purposes of this report, the three segments on A venida Encinas are identified as follows: Segment 1 From the Poinsettia Lane intersection to a point 3,000 feet northerly. Segment 2 3,000 feet northerly of Poinsettia Lane to a point 3,500 feet southerly of Palomar Airport Road. Segment 3 3,500 feet southerly of Palomar Airport Road to its intersection with Palomar Airport Road. The northerly and southerly segments are characterized by adjacent land uses such as commercial property, hotels, restaurants, automobile dealerships, offices and the Encina Water Pollution Control Facility. The middle segment that was recently constructed is located in vacant land. However, the NCTD commuter rail station will have an ingress/egress point on the newly constructed segment and is being constructed at this time. Because of the different characteristics of each road segment, and the different critical speeds obtained in the speed survey on each segment, it would be appropriate to establish three speed zones on A venida Encinas between Poinsettia Lane and Palomar Airport Road. Segment 2 has a design speed of 30 miles per hour. Table 1 lists the results of the speed survey. TABLE 1. SPEED SURVEY RESULTS 11/08/94 0.15 mi. N/0 Poinsettia (Segment 1) 39 11/08/94 0.4 mi. N/0 Macadamia (Segment 2) 38 11/17 /94 0.2 mi. S/0 P.A.R. (Segment 3) 40 31 to 41 32 to 42 29 to 39 30 to 40 32 to 42 87 80 84 CITY OF CARLSBAD TRAFFIC SAFETY COMMISSION STAFF REPORT COMMISSION MEETING OF: December 5, 1994 (continued) RECOMMENDATION: ITEM NO. 6A The Traffic Safety Coordinating Committee (TSCC) recommends that the prima facie speed limits on A venida Encinas from Poinsettia Lane to Palomar Airport Road be established as follows: Segment 1 Segment 2 Segment 3 35 miles per hour (existing prima facie speed to remain) 30 miles per hour 35 miles per hour Additionally, the TSCC recommends that curve warning signs be placed on Avenida Encinas at the sharp curve located near the entrance to the commuter rail station. NECESSARY CITY COUNCIL ACTION: An ordinance will be required to be adopted by the City Council to establish the prima facie speed limit as recommended. SEGMENT 2 NOT TO SCA LE PROJECT NAME DRAWN Y: LOCA TI ON MAP PROPOSED SPEED ZONES AVENIDA ENCINAS PROPOSED SPEED ZONES EXHIBIT 1 CITY OF CARLSBAD ENGINEERING AND TRAFFIC SURVEY STREET: Avenida Encinas __ ......_ ____ ............................................ ________________ _ DATE: ___ 1__.1/ __ 1 ..... 7/ __ 9 __ 4 _____ _ A. Prevailing S~eed Data: Date of Speed Survey Location of Speed Survey 85th Percentile 10 MPH Pace Percent in Pace Posted Speed Limit B. Accident HlstO!}'.: (11/01/92 to 10/31/94) 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 D. Roadwai Factors: Street Classification Design Speed length of Segment Roadway Width Number of lanes Vertical Alignment Horizontal Alignment Sidewalks Driveways Street lighting E. Ad!acent Land Uses: 0 3 1.67 4,000 (11/09/94) Direction: 11/08/94 0.15 Mi. n/o Poinsettia Lane 39MPH 31 to 41, 32 to 42 MPH 67% 35 MPH Traffic Signal at Poinsettia Lane Moderate No Bicycle lanes Allowed on East Side and Northerly 400 Feet (Off Pavement) of West Side Bike Route per Circulation Element of the General Plan Commercial Collector/Secondary Arterial 40 MPH 0.55 Mi. 32 Feet 1 Lane Each Direction Relatively Flat Relatively Straight Sidewalk on East Side Only Numerous Driveways Street Lights on East Side Only Automobile Dealerships, Medical Offices, Hotels, Restaurant F. Remarks: Although Avenida Encinas is shown as a secondary arterial on the Circulation Element of the General Plan, this portion serves as a commercial collector at the present time and connects to Palomar Airport Road on the north. The entire west side is unimproved and has no shoulder. 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. NOTE: Appropriate speed survey(s) is/are attached hereto and made a part hereof. S~ED SURVEY DATE: //-$· ?( TIME: f:120 to 1a:Isc1.}f_ TOTAL VEHICLES: l{)tJ • WEATHER: (;ooo CRITICAL SPEED: 3? MPH % 31 4-fl LOCATION: Al/EN/0/1 EAICINl'?.s ~ .f.S Ml. /:PINSt.m,1 PACE SPEED: 32 to tc:2 MPH , J."1/11£ OBSERVER/RECORDER: ___ -J'~l{/2;.z..i,,,{£:....-_______ _ CARS IN PACE:_--"'-£~7 ____ % Posted Speed Limit: .3..!J-MPH se NB Direction of Travel Direction of Travel MPH fl ! II '7-.. ;,<> ,., l MPH 6S 65 64 64 63 63 62 62 61 61 60 60 5.9 59 58 58 57 .• 57 56 56 55 55 54 54 53 53 52 52 51 51 50 50 49 49 48 48 47 47 46 46 45 45 44 I i/P1., 2 I X 44 43 ~ I -=> I q~ 43 42 IX IX X ~ ·c; j fi •~/? ,-~ IX .k K 42 41 7 2. ,~ .. JI X 41 40), X fi... X X 3 M 7 , 'O 'I .:: l, ) 40 39 l< x.. X X X .l(' .-j .,, ,., I I -'A' j 39 38 ~ l IX /I I t; y -, X IY IY X ,) , 38 37 >o I)( X -, ' IS z,-' ~ . a I 'J X X X iY X I.X )(' J A .) 37 3613 ~ I, , IA X l.lt' IX -I /I /I '} ~ Vi,) > ,) 36 35 I/ JI 3 (j C/ I 7 . '2 r IX X )I )( )< x 35 34 ) }o IX y IX t; J ~ J,f J '""., J " > 1)1 X 34 33 J >( .3 b ·, 7 .; () J, X y ), X 33 32) )(' )( IX IX s ,n J _'f j'' -' IX i)j X 32 31 2. 7 ,-I 2 ), y 31 30 X • ~ ;;;; .2 3 2 I X 30 29 IX i 2 I I ' 29 28 28 27 27 26 26 25 25 24 24 23 23 22 22 21 21 CITY OF CARLSBAD ENGINEERING AND TRAFFIC SURVEY STREET: _ __.,A""""v:..::e=n=id=a=-"E=n:..a;c..,.i:..:;na::as::.;. _____________ _ DATE: ____ 1 _._1/ __ 17"""/9 __ 4 _________ _ A. Prevalllng S(!eed Data: . Date of Speed Sul"l/8y Location of Speed Sul"l/8y 85th Percentile 10 MPH Pace Percent in Pace Posted Speed Limit B. Accident Hlsto~ Speed-Related Accidents Total Accidents Acc./Million Veh. Miles C. Traffic Factol'9! Awrage Dally Traffic Traffic Controls Pedestrian/Bicycle Traffic Bicycle Lanes On-Street Parking Other D. Roadwalf Factol'9! Street Classification Design Speed Length of Segment Roadway Width Number of Lanes Vertical Alignment Horizontal Alignment Sidewalks Driwways Street Lighting E. Adlacent Land Uses: Direction: Eastbound/Westbound 11/08/94 0.4 Mi. n/o Macadamia Drive 38MPH 29 to 39, 30 to 40 MPH 80% 30 MPH None (New Roadway) 1,200 (11/09/94) None Light No Bicycle Lanes Prohibited Except within Northerly 3/1 0 Mile of Segment Bike Route per Circulation Element of General Plan Secondary Arterial 30 MPH 0.62 Mi. 28 Feet to 64 Feet 1 Lane Each Direction Relatively Flat 600' Radius CUl"l/8 No Sidewalks Three Driveways No Street Light Transit Station, Railroad, Water Treatment Plant F. Remarks: Although the road will ultimately be built to the cross-section standards of a secondary arterial, this portion was constructed as a collector and has a design speed of 30 miles per hour. The northerly 3/1 O mile of this segment is 64 feet wide and fully improwd on both sides, but narrows to only 28 feet. G. Traffic Engineer's Recommendation (Explanatlon}: 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 30 MPH is found to be appropriate and justified, based upon the roadway design speed and other factors. NOTE: Appropriate speed surwy(s) is/are attached hereto and made a part hereof. CITY OF CARLSuAD SF ...:ED SURVEY DATE:_;..:..//__,,j, j_,--'-9-f.-Lj __ ? /00 TIME: /{):.Eo A./lj,to /2:tta tM, TOTAL VEHICLES=----= WEATHER: __ G~tJ.~~~z?'---------------3J CRITICAL SPEED: __ -=--~ MPH LOCATION: AVENLM EA/CIA/A. r z ,I/ Ml. ¼ / 2.? PACE SPEED: _g0 ,t,-3? to fa MPH OBSERVER/RECORDER: ____ J"'_'~~~~---------£0 CARS IN PACE: __ _....-_ __ _ % Posted Speed Limit: 30 MPH EB WB Direction of Travel Direction of Travel MPH fl 1. r: II ! i li ., l MPH 165 165 64 164 63 63 62 62 61 61 60 60 59 59 58 158 57 .• 57 56 I 56 55 55 54 54 53 53 52 52 51 51 50 50 49 49 48 48 47 47 46 46 45 45 44 44 43 X .12 z 'J I')() 2 I~ 43 42 X 2. 7 .. ~ ''R z •)( 42 41 X 2 -~ .._CJ ,,r .:,_1 j 41 40 X >< .._1 " ~:;-~ 7 '/ j X y I)' )I 40 39 ~ 3 ) h ~ IX I( ) 39 38) IX J( I of f. .--( :;.~ 1.,') 38 371) I(' ~, -,_. , •I .l=. !.A J 37 361) / -' ' .~ 7, I -➔ )( V .Y 36 35 I) X IX i X' X K j ~ , .. 1 :> y 35 341) IX IX 'J I ) '/ ~ 'l ? ,, X )( X rx IX )(' y y' X' 34 331~ 1 j '.) 1' j -'{ "7 :.A X X :Y IY)I .x 33 'I. I 32) I( IX ·X IX ,, J r> ·-_; I I) A 32 311)' )( X X ,-j , 1 2•7 IX IX I) .) 31 301) }{ y J ' I ' I ,.~ b ,;'\ y >< Ix lJ ) JQ 29 1., I/ .;_ -i -J ,,,,, ... I ~ 29 281) • I ' ~ f; ~ y X I) 28 27 i.A 1 I I 27 26 26 25 25 24 24 23 23 22 22 21 21 CITY OF CARLSBAD ENGINEERING AND TRAFFIC SURVEY STREET: ____ A...,v __ en __ i=d=a-=E .... n_.c""'in __ a=s _______________ _ DATE:---,-_1-'-'1'-"-/1"-'7"""'/9"-4,__ ____ _ A. Prevalllng S~eed Data: • Date of Speed Survey Location of Speed Survey 85th Percentile 10 MPH Pace Percent in Pace Posted Speed Limit B. Accident Hlsto~ (11/01/92 to 10/31/94) 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 D. Roadwa]t Factors: Street Classification Design Speed Length of Segment Roadway Width Number of lanes Vertical Alignment Horizontal Alignment Sidewalks Driveways Street Lighting E. Adlacent Land Uses: 0 1 0.67 4,900 (11/09/94) Direction: . Northbound/Southbound 11/17/94 0.2 Mi. s/o Palomar Airport Road 40MPH 32 to 42 MPH 84% None Traffic signal at Palomar Airport Road Light No Bicycle lanes Allowed on East Side and Off Pavement of West Side Bike Route per Circulation Element of the General Plan Industrial Collector/Secondary Arterial 40MPH 0.42 Mi. 31 to 58 Feet 1 lane Each Direction Relatively Flat Relatively Straight Sidewalk on East Side Only Numerous Closely Spaced Driveways on East Side Street Lights on East Side Only Water Treatment Plant, Service Station, Light Industrial, Railroad, Office Buildings F. Remarks: Although Avenida Encinas is shown as a secondary arterial on the Circulation Element of the General Plan, this portion serves as an industrial collector at the present time and connects to Poinsettia lane on the south. Except for the northerly 1/10 mile of this segment, the entire west side is unimproved. The roadway narrows from 58 feet to 31 feet when traveling south from Palomar Airport Road. 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 35 MPH is found to be appropriate and justified. ===== NOTE: Appropriate speed survey(s) is/are attached hereto and made a part hereof. CITY OF CARLSi!tAD S~ED SURVEY DATE:_....,__//__._· /_7--+-. f-f-TIME: f:30 to 1/:tJS 4.M, TOTAL VEHICLES:_....i.~-=~-=f} __ _ WEATHER: ____ ~{;.,~a_a_D ___________ _ CRITICAL SPEED: _ ___._½~'O __ MPH LOCATION: AIJENl{)A f=tYCIN,1S 2f -2 Ml. ;% PACE SPEED: 32 to fg MPH OBSERVER/RECORDER: ____ -J':~Wf:.:..i.i.ft _______ _ CARS IN PACE: __ ~8~f ______ % Posted Speed Limit: NONE MPH NB Direction of Travel so Direction of Travel MPH # '7-# 47-.. ;,p .., J MPH 65 65 64 64 63 63 62 62 61 61 60 60 59 59 58 58 57 . 57 56 56 55 55 54 54 53 53 52 52 51 51 50 50 49 49 48 48 47 47 46 46 45 y I 2 I I J/U 45 44 44 43 >( y 2 .. , f -;. UQ .9 ' [)( 43 42 )(' ..I -, j -~ 1-',e: '( ? V :i.-42 ~ 41 ~ IXl.,l : i 'I 2 , ), 41 40 ..I I) .? ' ~· 17 ) 3 v J )I 40 391,,' lr'IJ X IX _t; j '> , q ~ 'I "1...I .) 39 38 ~ IJi )( )( )( X 7 ::, /3 ·= , .. ~ C. y )., lt .... 38 37 1,1 ) X X X IY 7 ,_:::, :') ~ I tJ I.;' 1,1 ') '...1 37 36 7 J 2 I j T I 'I ( X X y J( )( 1 ... ) 1 .... ,.,. 36 35 X ~ I)( . «, H\ ' :') J :> . /'I 7 y V 1 ........ I/ , .,. /\. 35 34 K IX 3 ' j ; -x _) 34 33 ~ .2 I l '/ I ~ 1 ... 33 32 u X 3 ' ,. '7 I ) 1/ IX X' Jc J 32 311; ., .9 -;;J I 31 30 J -~ .2 ~ ,. _-;> l, 30 29 ~ ~ .;;J l.' q ~ IX )( 29 28 28 27 27 26 26 25 25 24 24 23 23 22 22 21 21