HomeMy WebLinkAbout1995-11-06; Traffic Safety Commission; ; Establish a prima facie speed limit on Calle AcervoCITY OF CARLSBAD
TRAFFIC SAFETY COMMISSION
STAFF REPORT
COMMISSION MEETING OF: November 6, 1995 ITEM NO. 6A
LOCATION:
INITIATED BY:
Calle Acervo between Calle San Blas and Camino De Los Coches
Traffic Engineer
REQUESTED ACTION: Establish a prima facie speed limit on Calle Acervo
BACKGROUND:
With recent subdivision construction, Calle Acervo has been extended to the intersection
of Calle San Blas. It dead ends immediately south of Calle San Blas. Tius request is to
establish a prima facie speed limit on the roadway.
DATA:
Calle Acervo is a collector street located east of Rancho Santa Fe Road and south of
Camino De Los Coches (see Exhibit 1). This road serves recently constructed homes and
will eventually be extended south to Rancho Santa Fe Road at the Carlsbad/Encinitas
border. When extended, Calle Acervo will connect Camino De Los Coches with Rancho
Santa Fe Road. The roadway has a design speed of 30 miles per hour and has low
volumes at this time. There are no homes that take direct access from Calle Acervo.
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 occurred on the road segment, roadway features, traffic volumes,
pedestrian volumes, adjacent land uses, driveway locations, critical speed, conditions that
may not be readily apparent to the driver, horizontal and vertical alignment, stopping sight
distance and superelevation.
Staff has completed an engineering and traffic survey for Calle Acervo (survey attached).
RECOMMENDATION:
The Traffic Safety Coordinating Committee recommends that the prima facie speed limit
upon Calle Acervo between Calle San Blas and Camino De Los Coches be established
at 30 miles per hour.
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.
LOCA TION
PROPO SED
SPEED ZO NE
NOT TO SCALE
MA P
PR OJECT NAME CALLE ACERVO
STAGECOACH
PARK
PROPOSED 30 MPH SPEED ZONE
DRAWN BY: SCOTT EVANS, CARLSBAD ENGINEERING DEPT.
I
EXHIBIT
1
STREET: Calle Acervo
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~
( Through 10/17/95)
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. Ad!acent Land Uses:
CITY OF CARLSBAD
ENGINEERING AND TRAFFIC SURVEY
0
0
0
1,214
Direction:
10/12/95
Calle AceNO at Corte Verso
32MPH
24-34 and 25-35 MPH
88%
None
DATE: __ 1 ___ 0 ..... /1 ___ 7..._/9 ___ 5 ________ _
Stop Signs on Intersecting Streets, Stop Sign at Camino De Los Coches
Local Only
None
Yes
Neighborhood School and Community Park Nearby
Collector
30 MPH
2,250 Feet
40 Feet
2 Lanes, 1 Each Direction -No Centerline Striping
Varies, 7% Maximum Grade, Vertical Curves through Intersections
Varies, Curvilinear
Yes, Both Sides
Two, Access to Future La Costa Canyon High School
Yes, Both Sides
Residential, Without Direct Access, Future High School
F. Remarks: Collector road serving master planned communities. High school, regional park, and elementary school in near
vicinity.
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 30 MPH is found to be appropriate and justified.
NOlE: Appropriate speed survey(s) is/are attached hereto and m de a part hereof.
CITY OF CARLSB .. D SP :D SURVEY
DATE: l0·/2,9S TIME: ?:oo to /1:fd ('J,/f. TOTAL VEHICLES: IM
WEATHER: &-000 CRITICAL SPEED: 32 MPH
2'1 TO 3'/
LOCATION: CALLE c}CER/JO @ <'Afff L/+fRSO PACE SPEED: 2s to 3S MPH
OBSERVER/RECORDER: 0t.J~ CARS IN PACE: 98 %
Posted Speed Limit: NO#,£ MPH
SB NB
Direction of Travel Direction of Travel
MPH # ! II ,.. i1., ' H MPH
If,~ I I I 165 ;
64 I 164 i
63 1 I I 163; 62 I I 62 :
61 I I 161: 60 1 I I I 1601
59 I 159!
58 I I 158 1
57 . I I 571 561 I 156 1 55 155
54 1 1541
53 1 1531
52 I I I 1521
511 151
150 I 150
,49 1 I I 149
481 48
47 I I 147 1 461 I 146
145 I 1451 44 44
43 43
42 I 421 41 I 41
40 -40 \
39 39
38 38
371 37
36 X I ,? j I I u, 36
35 :x r~ 2 ii ; -= 'I j I) 35
34 X )I ,;_-;, '.( ,-j -~ )1 1., 34 ~
33 X .) )I _3 ,,, 7 "7 ) X ,,. 1,-33
32 X 1/1 }( )( 4-j /j ~ ~ 'I x .... I) ,, 32
31 y I) I ::.t ,;; ~ {; ,.--/ I,; I,' 31
30 )I , [)I IX )( '> II} J_;,J 12 j 'I X y , V X, I,; / ~o
29 L> ), l-' II\ X ' s J" i 8 7 ·1 ) , :,., 29
28 ) )( ,? I 7 7 ,, s y V ,_ v,.,, ) 28
27 y IX' IX IX X X .)( y ,Q /.:, IS ,.,., ' X ) v J _..I) )( 27
26 IA X X X ,x x' X I,!, /5 . X X .I ✓~ I/ / 26 ,n
25 ~ IX I ~) 'J If .,., I) .) 25i
24 1.ll I ; 1 .', 1 j 1K' X ,I ,I 24 i
23 )(' X ,:,) ~ ., 1)1 23:
22 22;
21 I I I 121