HomeMy WebLinkAboutAGENDA REPORT 2019 0918 REG CCSA ITEM 09D CORRESPONDENCEFrom:Sean Corrigan
To:City Council & City Manager
Cc:Ky Spangler
Subject:Knotty Pine Street Stop Signs - Agenda Item 9.D.
Date:Wednesday, September 18, 2019 5:20:56 PM
Attachments:Multi-Way Stop warrant criteria 2B.07.pdf
Honorable Council and City Manager,
Dr. Mikos asked me to look at the Manual on Uniform Traffic Control Devices section
2B.07 cited by Mr. Edgington of the HOA. You will find his comment on stamped
page 51. He provided the section on stamped page 61. I have attached it here as
well for your convenience.
Please see the cautionary note at the top. That is, multi-way stops can create safety
issues when pedestrians, bicyclists and drivers expect that other road users will stop.
The accident cited by the HOA was apparently caused by a youth who failed to stop
at the existing Ashtree stop sign, as cited by the HOA on stamped page 49.
My evaluation of the warrant criteria and the optional warrant criteria cited in section
2B.07 is that it does not apply to this intersection. In other words, I respectfully do not
agree that installing additional stop signs is warranted.
Thank you.
Sean Corrigan, P.E.City Engineer/Public Works DirectorPublic WorksCity of Moorpark | 799 Moorpark Ave. | Moorpark, CA 93021(805) 517-6285 |fax: (805) 532-2225 | scorrigan@moorparkca.govwww.moorparkca.gov
Item 9.D.
Section 2B.07 Multi-Way Stop Applications
Support:
01 Multi-way stop control can be useful as a safety measure at intersections if certain traffic conditions exist.
Safety concerns associated with multi-way stops include pedestrians, bicyclists, and all road users expecting other
road users to stop. Multi-way stop control is used where the volume of traffic on the intersecting roads is
approximately equal.
02 The restrictions on the use of STOP signs described in Section 2B.04 also apply to multi-way stop
applications.
GuMance:
03 The decision to install multi-way stop control should be based on an engineering study.
04 The following criteda should be considered in the engineering study for a multi-way STOP sign installation:
A. Where traffic control signals are justified, the multi-way stop is an interim measure that can be installed
quickly to control trafflc while arrangements are being made for the installation of the traffic control signal.
B. Five or more reported crashes in a 12-month period that are susceptible to correction by a multi-way stop
installation. Such crashes include right-tum and left-tum comsions as well as right-angle collisions.
C. Minimum volumes:
1. The vehicular volume entering the intersection from the major street approaches (total of both approaches)
averages at least 300 vehicles per hour for any 8 hours of an average day; and
2. The combined vehicular, pedestrian, and bicycle volume entering the intersection from the minor street
approaches (total of both approaches) averages at least 200 units per hour for the same 8 hours, with an
average delay to minor-street vehicular traffic of at least 30 seconds per vehicle during the highest hour;
but ·
3. If the 85m-percentile approach speed of the major-street traffic exceeds 40 mph, the minimum vehicular
volume warrants are 70 percent of the values provided in Items 1 and 2.
D. Where no single criterion is satisfied, but where Criteria B, Cl, and C.2 are all satisfied to 80 percent of the
minimum values. Criterion C.3 is excluded from this condition.
Option:
os Other criteria that may be considered in an engineering study include:
A. The need to control left-turn conflicts;
B. The need to control vehicle/pedestrian conflicts near locations that generate high pedestrian volumes;
C. Locations where a road user, after stopping, cannot see conflicting traffic and is not able to negotiate the
intersection unless conflicting cross traffic is also required to stop; and
Chapter 2B -Regulatory Signs, Barricades, and Gates
Part 2 -Signs
California ~1UTCD 2014 Edition
(FHW A's MUTCD 2009 Edition, including Revisions l & 2, as amended for use in California)
November 7, 2014
Page 130
D. An intersection of two residential neighborhood collector (through) streets of similar design and operating
characteristics where multi-way stop control would improve traffic operational characteristics of the
intersection.