HomeMy WebLinkAbout1986-06-02; Traffic Safety Commission; ; Traffic Safety Commission consider posting a speed limit on Cadencia StreetCITY Of CARLSBAD
TRAFFIC SAFETY COMMISSION
COMMISSION REPORT Of: June 2 , 1986 I TEM NO. D1
LOCAT I ON: Cadencia Street
Avenue
Rancho Santa Fe Road to La Costa
I NI TIAT ED BY: Dennis Price, 7 515 Cadencia Street
PROB LE M AS STAT ED BY REQU ESTOR:
Cadencia Street needs to have speed limits posted.
DATA:
Mr. Dennis Price has requested that the Traffic Safety
Commission consider posting a speed limit on Cadencia Street.
Staff conducted speed surveys and collected information on
volumes, accidents, land use and roadway geometrics .
Cadencia Street is not shown as a classified street on the
City 's Circulation Element. It does act as a local collector
for this area of La Costa and provides direct access to
Rancho Santa Fe Roa d and La Costa Avenue. Though a local
collector type roadway, all homes have driveway access to the
street . Th e reside ntial density is 8.5 h omes per quarter
mile . The volume is 1,700 vehicles per day. The results of
the speed survey indicate an 85th percentile speed of
approximately 45 m.p .h.
The roadway has a downgrade from Perdiz to La Costa with a
maximum grad e of 9%. West of Perdiz is a 4 25 ' radius curve .
The only limiting feature is a crest verticle curve in the
vici nity of Borla Place which provi des a stopping sight
distance for a speed of approximately 30 m.p.h . Though the
verticle curve has a red uced design speed , it would not be
practical to base speed of the entire roadway on this
isolated feature. Also, the accident history does not
indicate any evi dent prob lem. Based solely on the 85th
TRAFFIC SAFETY COMMISSION
COMM ISSION REPOR T OF: June 2, 1986
Continued
I TEM NO . D1
percentile and the overall accident history, a 45 m.p.h.
speed limit could be recommended. However, considering that
posting the roadway would have little effect on speed and
considering that police enforcement will not increase, there
is no rationale to post a speed limit at this time.
RECOMMENDATION :
That the request for a speed limit on Cadencia Street be
denied.
NECE SSARY COUNCI L ACTION:
No action is required.
CITY OF CARLSBAD
SPEED ZONE EVALUATION
I.ocatialCaJ~nc.~c> 6{ @AvD~\. \;:½ Date c:..tf,~-}&c_
::::::S I J
Time 11 '. 30 -I 2 '. 'I 5" Weather c_ \ e. a< Road Qnli.tialS ,_(;_7 ___ 0_~........_ ____ _
1. Prevailing Vehic:ular Speed Data:
Posted Speed(s) ~N ... <>,c.,aD~~ .... ◄ ___ _ Schcol l.cme'l Yes
85'1 Speed "/ fa 'YO
10 MPH Pace {3~ -Lo./ <o ----------------i in Pace (.. <../ --------------
2. Accident Data:
Street Classific:at::Lcm I oc.a \ C-o \\ e.c...(o _...-Apprmt. mr , , c 6 v f".P
Accident rate L-\ Aa./MVM for peri.oc[ f 4 ,0 \'9g <..\ -De~ 1qg5
City-wide rate for streets of s1mi l ar characteristics No;\ A y 0.
0
\ \ o, ~ \ ~
3. ~, Traffic and Roadside c.ordit:icas:
I&iduse ~⇒;;\~\ ;:~ci\:
Geamncics =='-'~~C\~ CO= fo ~ou\b
Other Features __ .&..;Na.o-o_.._e . .__ ________________ _
4. Ua.isua1 CcnditialS: __ N......,.p...,0,_,_e. _________________ _
s. Traffic Engineer'• Recc:m:nmdat:l.m: posted speed .JS rT\9 ½
Explanat1c:n: t, e oe.-<" ol c-e-2 \~en \el c.'a c.---:s: e:--e-Y e :<: P s:;: 6 '<s: f&-s ~
qn~ (o 6€,; £PC\~,c:-,Y<:-0X µ,\b Ct:?-PD:lco<--~(-C?O J:p ,
el'wc ,.,,,S,"'"' -~ ta s:e.il-u.LLJ.. ~o5Y1 6:S :th ~,af\{~a •
6. Approvals:
Traffic Camri Slllim --------City C:OJDd] ---------Resolutiat or Ordinance --------------------
SPEED SURVEY
I/ · 30 bt5.
DATE:f~J<.-I~ ,qgGTIME: /\=;( to (L.1
WEATHER: ('_ ,... '°t
LOCATION:1!:~e.,.4 @_ ])a fry 4-e
OBSERVER/ RECORDER: ,J 'EE 1-./o EE
#
64 I/ I '2-I -6Z.
60 -la
56 I/ J 7,,
54
lll. 7 17 l, 4~ t..
50 I/ , l/ ~ lo 4-
48 I.I I/ ~ 4-.q.-
146 I/ I/ ~ I/ I/ 5 ,o (o , .. I~ ,~ I/ [/ I/ L,' (,, Iv ,o
42 17 7 / [.--l7 ~ I/ ., /4 I 2,
IPH 40 I/ X'. I_/ I/ I/ I.I V I/ I/ )('. ~ i, /2,.-ti +-'2 !)
38 ~ ~ I/ i, 4-h Cl
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TOTAL VEHICLES: /do
CRITICAL SPEED: 41.o MPH
PACE SPEED: ;;> 0 to 4~ MPH
CARS IN PACE: G1 '.I,
64 ,_
lg
60 1-58 ,_
56 ,_
54
52
1,, '50
I/ l,' 48 -,_
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CITY OF CARLSBAD
SPEED ZONE EVALUATION
l.ocaticn Cad~DC..~C\ 6( ~ /I{( j i e; 6 ( Date _t../--+-, 8-+-( ...... e~----
T.fme 2.-! 00 -J: \ 2 Weather C... \ea, Road Qnli.ti.als &i c:,oJ -
1. Prevailing Vehi.ollar Speed Data:
Posted Speed(s) ~ooe--School Zema? Yes
SSL Speed £.f ~ 50i Speed 38
10 MPH Pace J~ ,(.:::> 1../<../ 4X in Pace 6~
2. Accident Data:
Street Classifiati.cn \ oe-C\ \ Co\\ e.c::. (or Approx. mr ___ \ _1 o ........... o ____ y __ f' __ Q __ _
Accident rate 'i A c.e-for per:locf ,f C\n \ ~8 ~\-P~c.... \C\85
City-wide rate for streets of simf J ff c:haracterist:lc:a Nc:tA V; \\ a 'o\e.
3. HiglNlY, Traffic and Roadside Cood:f.t:ialS:
Lmduse Rs:-o,deol ·,e \ /Vac..c.o\
C.-rrlcs :;v~z::t-i & :c~f v:1 A:~:rZ~L=
Other Features b\, o DS::: _
4. Urusua1 Qxiditicxls: _.,L,,N~o.o..a.,;e.-=-------------------
5. Traffic~·· Becmmmdatim: posted speed 3S~p \:)
Explanatic:n: t,c ne ca~ s:e t2,Ae o<\ 61 c. b<?::< k. i: o ~ 0 r{'ee Y a "'J..
?:<:eo( v<;;;-,\(c\c C Safve,_. q\ :Ootls. CRG/2 cncos::s:\d2 crc,1qL\<o •
-+'coC'.'.). 85 +h :ir'e,cg,n\il, ,v.e/2.
6. Approval.a:
Traffic Ca:md ssim -------City COlmd] ________ _
Reso]Jiti.al or Ordinance ___________________ _
SPEED SURVEY -A f • t,O 2 \~ DATE:(Jl!.1'-< /1f8C::TIME:2Pfl to ~f,--1
WEATHER: ~lFA IL
LOCATION: C4or"d<:..1-'J E/o ,t-R1>>-& ~r
OBSERVER/RECORDER: 1~ r;zFf:
w 'b # %
64 -6Z.
~
.ll.
56
54 l/ ' 4-
52
50 IJ I IL
48
lu I/ I ( ,-
IU I/ I.,-, .....
42 V I/ I.JII' -3 I y
IPH 40 l) 17 ?~ }
38 l/ l/ , ~ Ii-
36 l/ l/ IJ' ~ tv
11.t I/ I/ L/ I/ 4-' 12 lZ ~ l/ 2-~
lin ~ I Ii,---28 ~ I/ z. I')
26
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1-Z, 4-7
TOTAL VEHICLES: ._'i:._O
CRITICAL SPEED: 44-MPH
PACE SPEED: ~4-to 44-MPH
CARS IN PACE: -SB 1,
E/~
~ 64 -lg
60 ,_
58 -,_
56
54 1-52
50
I) l/
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48 -I.I 146
l/ I/ lli I/ 142
I/ [/ [/ l)( [,JI 40
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36 ,_
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