HomeMy WebLinkAbout1986-08-04; Traffic Safety Commission; ; Request for additional stop sign at intersection of Park Drive and Kelly Drive11:ITY Of CARLSBAD
T.RAFFIC SAFETY COMMISSION
COMMISSION REPORT Of: August 4, 1986 ITEM NO . .Q.:1_
LOCATION: Intersection of Park Drive and Kelly Drive.
INITIATED BY: Susan Haupert, 4904 Park Drive, Carlsbad, CA
92008
PROBLEM AS STATED BY REQUESTOR:
Additional stop signs are needed at this intersection.
DATA:
Kelly Drive intersects Park Drive creating a "T" intersec-
tion. A stop sign is located on Kelly Drive. On the
immediate northwest corner of this intersection is Kelly
Park, with Kelly Element ary··-5-chool immediat e.ly north of the
park. East of Kelly Drive, Park Drive curves northeasterly
to a residential area.
During the school year, children cross Kelly Drive with the
assistance of school crossing guards (see attached letter
from Kent Sears). To improve sight distance, hedges along
Park Drive east of Kelly Drive were recently trimmed.
Advanced warning signs have recently been installed on Park
Drive advising motorists of the school crossing. There have
been no reported accidents in the past eighteen (18) months
(see attached accident diagram).
The primary function of a stop sign is to assign right-of-way
to crossing streams of pedestrians, bicyclists and motor
vehicles to share the same intersection. Installation of a
stop sign at locations where they are unexpected should
generally be avoided, as the stop sign may lead to an
increase in accidents. Stop signs should only be installed
where traffic and roadway conditions are such that the signs
are necessary. The basic criteria (policy) that establishes
the need for stop signs is commonly referred to as Stop Sign
Warrants.
TRAFFIC SAFETY COMMISSION
COMMISSION REPORT OF: August 4, _1986
Continued
ITEM NO.D-3
Stop Sign Warrants contained in that policy _are adopted from
nationally accepted criteria and only those intersections
that meet the minimum warrants should be considered for stop
signs. Any of the following conditions may warrant a multi-
way stop sign installation:
1. Where traffic signals are warranted and the need is
urgent, the four-way stop is an interim measure that can
be installed quickly to control traffic while arrange-
ments are being made for the signal installation.
2. An accident problem, as indicated by five or more
reported accidents of a type susceptible of correction
by a four-way stop installation in a 12-month period.
Types of accidents susceptible of correction include
right angle and left turn collisions.
3. Minimum volume warrant:
a. The total vehicular volume entering the intersec-
tion from all approaches must average at least 500
vehicles per hour for any eight hours of an average
day, and
b. The combined vehicular and pedestrian volume from
the minor street or highway must average at least
200 units per hour for the same eight hours with
an average delay to minor street vehicular traffic
of at least 30 seconds per vehicle during the
maximum hour.
c. When the 85-percentile approach speed of the major
street traffic exceeds 40 miles per hour, the
minimum vehicular volume warrant is 70 percent nf
the above requirements.
CONCLUSION:
None of the warrants for the installation of additional stop
signs at the intersection of kelly Drive and Park Drive are
met.
TRAFFIC SAFETY COMMISSION
COMMISSION REPORT OF: August 4, 1986
Continued
RECOMMENDATION:
ITEM NO.D-3
The Traffic Safety Coordinating Committee recommends that the
request for additional stop signs at this location be denied.
Staff will continue to monitor this intersection.
NECESSARY COUNCIL ACTION:
None required if the request is denied. An ordinance or
resolution will be required for Council action if the stop
signs are recommended by the Traffic Safety Commission.
GOLLISlOa DIAG~Ai,1 ~OCATION
'(<.... ,e:.1..,., t..,.,
CITY OF CARLSBAD
TRAFFIC ENGli:,IEERING SECTION
NO .. ACC!CENTS BY TYPE
rou.l PIOP. D.lMAOI UUUIT ,.,.,
8
YEH. MOVING AHEAD
t<E(.t(--ilra<., YEH. BAC!I.ING UP
----• P(0ESTAIAN
TRAIN
c::>, PARKED VEHICLE
D FIXED OBJECT
Q PROP£11T'f DAM.ICE ONLY
® INJURY ACCIDENT
• FATAL ACCIDENT
B 0 0
LEGEND
~ HEAD• ON
:Cl { ) • HUD· ON SIDESWIPE
AEAfll END
OVERTAKING SIOESWIP!
IIIGHT ANGLE
APPROACH TURN
OVEATAIUNQ. TURN
OUT OF CONTROL
VEHICLE TURNED OYEII
LIONf DAIi WU
\
CONST CONSTRUCTION ZONE
DPO DRIVER PHYSICAL DEFECT
DY ' DEFECTIVE VEHICLE
ES EXCESS SPEED
FTC FOLLOWING TOO CLOSE
MISO HAD BEEN DRINKING
H•II HIT AND RUN
ILC IMPROPER LANE CHANGE
IP IWPl'tOPE" PA.SS,NQ
IT IMPROPER TURN
INATT INATTENTION
M/C MOTORCYCLE
RS, RAN STOP SIGN 0" SIGNAL
SFII STOPPED DR $(OWING FOR PEIJESTRIAN
VO VIS!BILllY ODSTAUCTED
VRW VIOUUD RIGHT Of' WAY
WS WRONG 510[ OF STlll!.ET
'
1200 ELM AVENUE
CARLSBAD, CA 92008-1989
TELEPHONE
(819) "43U541
Office of the City Engineer
Citp of Carlibab
May 23, 1986
Ms. Carol Harrera, Principal
Kelly Elementary School
4885 Ke l ly Drive
Carlsbad, CA 92008
SCHOOL PEDESTRIAN. SAFETY AT THE INTERSECTION OF PARK DR. AND KELLY DR.
The City Engineering Department was asked to ·1ook at the operation of
the intersection of Park Dr. and Kelly Dr. in regard to school pedestrian
safety. A suggestion was made to create a three way stop. Though I cannot
recommend a three way stop there are measures which can enhance safety for the
students.
Our field investigation found that the hedge along Park east of Kelly restricted
the view drivers had of the activity of the crosswalk area. These hedges will
be removed. We will also be placing advance signing on Park to alert drivers
of the school crosswalk area,
The Student Safety Patrol, which you use at this intersection, is an excellent
way to provide for the safety of students crossing Kelly. When properly trained
I feel it is the best method. After observing your Student Safety Patrol, I
have the following suggestions:
1. The patrol members with paddles should be placed on al I three legs
of the intersection, simulating a three way stop during peak pedes-
trian activity.
2. These same students should stand out of the travelled lane. They
should stand in the parking lane or in the shoulder area.
3. Students should be crossed only after a reasonably large group has
accumulated.
4. If vehicles are approaching, they should be allowed to stop completely
before crossing the students. Not only does this ensure the vehicle
stops, but it provides a buffer between the students and any other,
approaching traffic.
With these changes, I believe we have done all that is necessary to provide
for the safety of the students. If you need to discuss this or have any
questions, please call.
/ I f
/4 ,._,_. ' ,4.e CA/'.;,,_
KENT SEARS
Traffic Engineer
KS:cs