HomeMy WebLinkAboutReso 119-92 StopSignWarrants RESOLUTION NO. 119-92
A RESOLUTION OF THE GITY GOUNGIL
OF THE GITY OF DUBLIN
APPROVING WARRANTS FOR INSTALLATION OF STOP SIGNS
AND YIELD RIGHT-OF-WAY SIGNS
WHEREAS, public safety may require installation of stop signs and/or
yield right-of-way signs; and
WHEREAS, certain criteria, called "warrants," have been developed in
order to determine whether the installation of stop signs or yield right-of-way
signs will improve public safety at a specific location; and
WHEREAS, consistent application of these criteria is essential to the
effectiveness of the stop sign or yield sign;
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of
Dublin does hereby approve the criteria, called "warrants" for all-way stop sign
installations, one-way or two-way stop sign installations, and yield right-of-way
sign installations attached as Exhibits A, B, and C respectively.
BE IT FURTHER RESOLVED that the City Council may approve installation of
stop signs and/or yield right-of-way signs which do not meet these criteria if the
City Council finds that public safety and interest is best served by installation of
the stop signs and/or yield right-of-way signs.
PASSED, APPROVED, AND ADOPTED this 28th day of September, 1992.
AYES:
NOES:
ABSENT:
Councilmembers Burton, Howard, Jeffery, and Mayor Snyder
None
Councilmember Moffatt~~_t~~
Mayor
a:(9293)\september\resotraf
WARRANTS FOR ALL-WAY STOP SIGN INSTALLATION
A fully-justified, properly installed all-way stop can effectively assign right-of-
way, reduce vehicle delay, and decrease accidents. All-way stop sign installation
may be considered if any of the following conditions exist:
1. VOLUME
(a)
(b)
Total vehicular volume entering the intersection from all
approaches must average 350 vehicles per hour for a four-way
intersection OR 300 vehicles per hour for a T-intersection for any
eight hours of an average day. The eight hours need not be
consecutive.
In addition, the combined vehicular and pedestrian volume entering
the intersection from the minor street or streets for the same
eight hours must average at least 1/3 of the total volume entering
the intersection.
2. ACCIDENTS
Five or more reported accidents within a 12-month period and of a type
susceptible to correction by installation of all-way stop signs.
3. VISIBILITY
The intersection sight-distance (based on Caltrans standards) on one or
more approaches of the major street is less than 150 feet.
4. RESIDENTIAL AREA
Warrants are to be reduced to 60% of the values in Section 1 and 2 above
if ALL of the following conditions are met:
(a)
(b)
(c)
(d)
(e)
(f)
Both streets are residential streets with existing 25 mph speed
limits.
Neither street is an adopted through street.
Neither street exceeds 40 feet of roadway width.
No existing stop sign or signal is located on the more heavily
traveled street within a distance of 600 feet.
Streets extend 600 feet or more away from the intersection on at
least three sides.
Installation of a all-way stop iscompatible with overall traffic
circulation needs for the residential area.
5. ELEMENTARY SCHOOL CROSSING
This warrant is satisfied by the conditions in EITHER (a) OIl (b) below
(a)
Students cross the more heavily traveled street at the
intersection as part of an official elementary school route plan,
and if ALL of the following conditions are met:
(i)
All of the conditions in Section 4 Residential Area (a
through f) are met.
EXHIBIT "A" OF RESOLUTION
PAGE 1 OF 2
(b)
(2)
The more heavily traveled street has more than 280 feet
intersection sight distance visibility (based on Caltrans
standards).
(3)
The elementary school route plan has been approved by the
Public Works Director/City Engineer.
0~
More than 20 elementary school children per hour cross the more
heavily traveled street going to or from school at a time when at
least 300 vehicles are in direct conflict with pedestrians, AND if
all of the following conditions are met:
(i)
The more heavily traveled street has adequate intersection
sight distance visibility (based on Caltrans standards) for
the 85th percentlie speed o__r speed limit of the major
street, whichever is higher.
(2)
No existing stop sign, signal, or crosswalk is located on
the major street within a distance of 600 feet.
<3)
Installation of an all-way stop is compatible with overall
traffic circulation needs.
EXHIBIT "A" OF RESOLUTION
PAGE 2 OF 2
WARRANTS FOR ONE-WAY OR TWO-WAY STOP SIGN INSTALLATION
One-way or two-way stop signs are appropriate where there is a need to control the
right-of-way at an intersection, but traffic conflicts are not significant.
Typically, the signs are installed on local streets where they intersect collector,
major, or arterial streets, and/or where collector streets intersect major or
arterial streets.
Stop sign installation on the minor (lower volume) street may be considered if
any TWO of the following conditions exist:
1. VOLUME
(a)
(b)
Total vehicular volume on the major street must be 500 vehicles
per day or 50 vehicles per hour during the peak hour on an average
day.
Total vehicular volume on the minor street must be 250 vehicles
per dayor 25 vehicles per hour during the peak hour on an average
day.
2. ACCIDENTS
Two or more reported accidents within a 12-month period of a type
susceptible to correction by installation of stop signs. A yield sign
may be considered if no other warrant is met.
3. VISIBILITY
The intersection sight distance (based on Caltrans standards) on one or
more approaches of the street is less than 125 feet.
4. UNUSUAL CONDITIONS
85th percentile speeds greater than 25 mph prevail or unusual conditions
exist (such as a school, playground, steep hill, visible signs of skid
marks, etc.)
Stop sign installation on the minor street may be considered if any ONE of the
following conditions exist:
1. VOLUME
(a)
(1)
(2)
Total vehicular volume on the major street must be 1,000
vehicles per. day or 100 vehicles per hour during the peak
hour of an average day AND
Total vehicular volume on the minor street must be 500
vehicles per day or 50 vehicles per hour during the peak
hour of an average day.
o~
(b)
The minor street intersects with a major street, and the major
street has a vehicular volume of more than 1,900 vehicles per day.
EXHIBIT "B" OF RESOLUTION
PAGE 1 OF 2
ACCIDENTS
Three or more reported accidents within a 12-month period of a type
susceptible to correction by stop signs.
VISIBILITY
The intersection sight distance (based on Caltrans standards) on one or
more approaches of the major street is less than 100 feet.
SCHOOL CROSSING
The minor street (lower volume street) crossing is on an officially-
designated elementary school route; or a minimum of 10 children cross
the minor street going to or from school.
EXHIBIT "B" OF RESOLUTION
PAGE 2 OF 2
WARRANTS FOR YIELD SIGN INSTALLATION
Yield sign installation on the minor (lower volume) street may be considered if any
of the following conditions exist:
1. VOLUME
(a) Total vehicular volume on the major street of 500 vehicles per day
or 50 vehicles per hour during the peak hour of an average day.
(b) Total vehicular volume on the minor street of 250 vehicles per day
or 25 vehicles per hour during the peak hour of an average day.
Substantially higher volumes than the above warrant consideration of a
stop sign.
2. ACCIDENTS
Indication of an accident or special problem that could be corrected by
yield signs.
3. VISIBILITY
The intersection sight distance (based on Caltrans standards) on one or
more approaches of the street is less than 125 feet.
4. PHYSICAL CONFIGURATION
Right-of-way assignment is needed to prevent confusion, but where a stop
is not necessary at all times.
5. RIGHT TURN LANE
Where there is a separate or channelized right turn lane, without an
adequate acceleration lane.
NOTE:
All yield sign installations shall be checked at approximately
three-month intervals for one year to determine if operation is
satisfactory. If there is continued accident experience,
replacement of yield signs by stop signs shall be considered.
EXHIBIT "C" OF RESOLUTION