HomeMy WebLinkAbout1993-03-01; Traffic Safety Commission; ; Establish a prima facie speed limit - Avenida Encinas-Poinsettia Lane Northerly to End of RoadCITY OF CARLSBAD
TRAFFIC SAFETY COMMISSION
STAFF REPORT
COMMISSION MEETING OF: March 1, 1993 ITEM NO._@_
LOCATION: Avenida Encinas-Poinsettia Lane Northerly to End of Road
Carlsbad Police Department INITIATED BY:
REQUESTED ACTION: Establish a prima facie speed limit
BACKGROUND:
DATA:
Avenida Encinas is designated as a secondary arterial on the Circulation Element of
the General Plan. In the future, Avenida Encinas will connect between Poinsettia
Lane and Palomar Airport Road. However, at this time the subject segment is only
constructed for a length of 3,000 feet and to approximately one-half of the ultimate
roadway width. The various commercial uses, motels and automobile dealerships
generates traffic volumes that has drivers unfamiliar with the dead end road. To
control excessive speeding, the Traffic Division of the Carlsbad Police Department
has requested that a prima facie speed limit be established.
Avenida Encinas is constructed from the signalized intersection of Poinsettia Lane
to a point 3,000 feet northerly where the road ends at the Hohen Honda automobile
dealership. The existing pavement width is 32 feet with curb and gutter, sidewalk and
street lights constructed on the easterly side of the roadway. Two short-length
cul-de-sacs in tersect Avenida Encinas in the subject segment, however, there are no
traffic controls on Avenida Encinas at the intersections. Seven driveways are located
on Avenida Encin as to serve the various businesses located along the street. The
roadway is striped such that on-street parking is permitted on the easterly side of the
roadway, but is not permitted on the westerly side.
A traffic count conducted on February 3-4, 1993 indicated a 24-hour average daily
traffic volume of 4,369 vehicles on Avenida Encinas at a location approximately 300
feet northerly of Poinsettia Lane. The northbound peak hour occurred between 2:00
p.m. and 3:00 p.m., and the southbound peak hour was between 3:00 p.m. and 4:00
p.m.
During the past three years (1990-1992), there have been seven reported traffic
collisions on Avenida Encinas between Poinsettia Lane and its terminus. Collision
information is indicated on Table 1.
CITY OF CARLSBAD
TRAFFIC SAFETY COMMISSION
STAFF REPORT
COMMISSION MEETING OF: March 1, 1993 ITEM NO. _@_
( continued)
TABLE 1: COLLISIONS NORTHERLY OF POINSETTIA LANE
PRIMARY COLLISION
DATE LOCATION TIME FACTOR
1/03/91 20' s/o Raintree 5:20 p.m. Inattention
1/25/91 0.30 mile n/o Poinsettia 10:20 a.m. Improper Backing -Hit & Run
12/30/91 280' n/o Poinsettia 10:00-11:00 p.m. Inattention -Hit & Run
2/22/92 0.02 mile n/o Macadamia 2:15 a.m. DWI -Hit & Run
4/21/92 0.75 mile n/o Poinsettia 4:25 p.m. Improper Turn
8/29/92 15' n/o Poinsettia 5:30 p.m. ESS -Inattention
11/27/92 0.20 mile n/o Macadamia 1:10 p.m. Violation of Right-of-Way
From Table 1, it can be observed that only one of the collisions had exceeded the
safe speed (ESS) as the primary collision factor. Excessive speed was not a factor
in the other collisions.
A speed survey was conducted on Avenida Encinas at Macadamia Drive on
February 10, 1993. The critical speed was found to be 41 miles per hour. The pace
speed was 33 miles per hour to 43 miles per hour with 77% of the vehicles in the
pace.
RECOMMENDATION:
Based upon the results of the engineering and traffic survey, the Traffic Safety
Coordinating Committee recommends that a 35 mile per hour prima facie speed limit
be established upon Avenida Encinas from Poinsettia Lane to its terminus 3,000 feet
northerly.
NECESSARY CITY COUNCIL ACTION:
An ordinance will be required to be adopted by the City Council to establish the
prima fade 35 mile per hour speed limit.
CONDITION DIAGRAM
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LEGEND
X X X CHAINLINK FENCE
I I I I M-9 BARRICADE
/17\ DRIVE\JAY
PROJECT NAME : AVEN I DA ENCINAS
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PROPOSED SPEED Z □NE
P □INSETTIA LANE TD END □F ROAD
I
NOT TD SCALE
EXHIBIT
1
CITY OF CARLSBAD SPEED SURVEY
DATE : __ 2=-----:• /0"-----'• 9.....a'.3 ___ _ TIME: 8:1/o A.M. to 9:Sd A.M. TOTAL VEHICLES: _ __.~L...!:W~---
WEATHER: ____ ~Gc}--=0-{) _____________ _ CRITICAL SPEED: __ £__,__/ __ MPH
LOCATION:AVEN/,D4 Mc/NAS @ MACAMM/d bRIVE PACE SPEED: 33 to MPH
OBSERVER/RECORDER: ___ ~J~w'=--{i'----------CARS IN PACE: __ 7......__._7 ___ %
Posted Speed Limit:~PH
NB SB
Direction of Travel Direction of Travel
MPH ' "I I/ 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 X ? I 2 2 " 45
44, ") 2 2 I 7 :;, 44
43 ~ JI JI y ( !5 s t 43 42 J ~ ,, X X ,-/0 " " ") ~ 42
41 l b _c ~ ) I .P 41
40 (' .'i • 7c ,:;. 40
39 ,I) )( ' 9 -7 7 ,,, I~ ·. ., 39
38 I.) X IX IX .)( X X IH } :;, I 7 ,, -38
37 I) G -,:; /fJ ,-, , 37
36 I) X IY IX IX 7 /'I I > ~ l7 i/J t:; ~ 36
35 I~ X 'I ' ; :..-D s J 35
34 .2 fl 7 7 .f. /) .C. " . 34
33 G ( ,, 2 f; 'X JI .) 33
32 l.l'CIX 2 'I './ I ! a 32
31 ,,_"J , ( 7 ,.) 31
30 ':; _: ~ 7 ., Y I.J 30
29 ·i .3 I j ~ X ~ 29
28 I I I 2 II' 28
27 27
26 26
25 25
24 24
23 23
22 22
21 21