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Agenda Item
ASR
Control 25-000781 |
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MEETING
DATE: |
12/16/25 |
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legal entity taking action: |
Board
of Supervisors |
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board of supervisors district(s): |
All
Districts |
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SUBMITTING Agency/Department: |
OC
Public Works (Approved) |
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Department contact person(s): |
Justin
Golliher (714) 667-1675 |
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Wei
Zhu (714) 647-3976 |
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Subject: Adopt Resolutions and Approve OC
Traffic Committee Report for October 2025
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ceo CONCUR |
County Counsel Review |
Clerk of the Board |
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Concur |
Approved
Resolution to Form |
Consent
Calendar |
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3
Votes Board Majority |
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Budgeted: Yes |
Current Year
Cost: $58,000 |
Annual Cost: N/A |
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Staffing Impact: |
No |
# of Positions: |
Sole Source: N/A |
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Current Fiscal Year Revenue: $50,400
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Prior Board Action: 10/8/1985 #44 |
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RECOMMENDED
ACTION(S):
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1. |
Find that the project is categorically
exempt from CEQA, Class 1 (Existing Facilities) pursuant to CEQA Guidelines
Section 15301. |
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2. |
Adopt a Resolution to approve the Orange
County Traffic Committee Report of October 9, 2025 - Item A to establish
all-way stop control and side-street stop control at 21 intersections
throughout unincorporated Orange County as listed in Orange County Traffic
Committee Report - Item A. |
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3. |
Adopt a Resolution to approve the Orange
County Traffic Committee Report of October 9, 2025 - Item B to rescind Item 3
of Resolution 85-1465 and establish a 35 miles per hour speed limit on
Foothill Boulevard between Newport Avenue and Arroyo Avenue. |
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4. |
Adopt a Resolution to approve the Orange
County Traffic Committee Report of October 9, 2025 - Item C to establish a 35
miles per hour speed limit on Windmill Avenue between Sienna Parkway and
Antonio Parkway. |
SUMMARY:
Approving the Orange County Traffic
Committee Report and adopting resolutions to establish all-way stop controls
and side-street stop controls at various locations within Orange County; reduce
the speed limit at Foothill Boulevard between Newport Avenue and Arroyo Avenue;
and set the speed limit at Windmill Avenue between Sienna Parkway and Antonio
Parkway will improve traffic safety and operations.
BACKGROUND
INFORMATION:
At the October 9, 2025 Orange
County Traffic Committee (Committee) meeting, the following items were
agendized and discussed:
Item A - Stop
Controls
The County of Orange (County)
received Cycle 12 funding from the Highway Safety Improvement Program (HSIP) to
install signs and pavement markers at uncontrolled intersections across
unincorporated Orange County to enhance safety on County maintained roadways.
Sixty-one uncontrolled intersections were evaluated to determine whether
All-Way Stop Control (AWSC) or Side-Street Stop Control (SSSC) would be
justified. The warrant study was prepared by Fehr & Peers, one of the
County’s on-call consultants.
Evaluations were conducted in
accordance with state and local guidance, including the California Manual on
Uniform Traffic Control Devices (CA MUTCD, 2014 Edition, Revision 9, 2025) and
the Orange County Traffic Manual (OCTM, 2007). Standard criteria for stop sign
installation include collision history, multimodal traffic volumes and approach
speeds. Optional criteria may also be applied, at the discretion of engineering
judgment, to account for conditions such as left-turn conflicts,
vehicle-pedestrian conflicts or sight distance limitations. Based on analyses,
AWSCs are justified at three locations in Rossmoor and SSSCs are justified at
18 locations across unincorporated Orange County.
The Committee reviewed the
evaluation and approved the recommendation to establish either an AWSC or SSSC
at the 21 intersections listed in Attachment B. The estimated cost for
installing pavement markings and signs is $56,000. The County will contribute
$5,600, or 10 percent of the total cost, and the rest will be funded by the
HSIP Cycle 12 Fund.
Item
B - Speed Limit
On October 8, 1985, the Board of
Supervisors (Board) approved Resolution No. 85-1465 to increase, retain or
establish speed limits at various locations throughout unincorporated areas of
the County, including increasing the speed limit at Foothill Boulevard between
Newport Avenue and Arroyo Avenue to 40 miles per hour (mph).
In
July 2025, a resident of North Tustin requested that OC Traffic Engineering
consider reducing the speed limit along Foothill Boulevard between Newport
Avenue and Arroyo Avenue. In response, OC Traffic conducted an Engineering and
Traffic Survey (E&TS) to determine whether a speed limit reduction was
warranted.
The
speed survey conducted in August 2025 recorded an 85th-percentile speed of 40
mph, which aligns with the posted speed limit. However, the calculated accident
rate along this segment has increased from 0.95 to 2.27 (collisions per million
vehicle miles traveled) between 1983 and 2025. Increased use of alternative
transportation modes, such as e-bikes, and the proximity to several schools,
including Foothill High School, Arroyo Elementary School and Hewes Middle
School, were considered in the evaluation.
Based
on these factors, OC Traffic Engineering recommends reducing the speed limit
from 40 mph to 35 mph on Foothill Boulevard between Newport Avenue and Arroyo
Avenue by applying the 5-mph reduction in accordance with the CA MUTCD and
California Vehicle Code (CVC) 22358.6(c). This action would also rescind Item 3
of Resolution No. 85-1465.
The Committee reviewed the
evaluation and approved the recommendation to reduce the speed limit of
Foothill Boulevard between Newport Avenue and Arroyo Avenue from 40 mph to 35
mph. The estimated cost to update speed limit signage is $1,000.
Item
C - Speed Limit
In
July 2025, a resident of Ladera Ranch requested the installation of a crosswalk
and/or traffic calming measures at the intersection of Windmill Avenue and Main
Street. In response, OC Traffic Engineering conducted a field investigation and
an E&TS. During the investigation, staff noted a Class III bike route and
the absence of posted speed limit signs along Windmill Avenue. In accordance
with California Vehicle Code (CVC) Section 22357(a), a prima facie speed limit
must be established before traffic calming or crosswalk enhancements can be
further evaluated.
A
speed survey of Windmill Avenue recorded an 85th-percentile speed of 39 mph,
which under CA MUTCD Section 2B.13 supports a posted speed limit of 40 mph.
However, due to the presence of a
Class III bike route and the proximity to nearby schools, OC Traffic
Engineering recommends setting the speed limit at 35 mph on Windmill Avenue
between Sienna Parkway and Antonio Parkway by applying the 5-mph reduction in
accordance with the CA MUTCD under CVC 22358.6(c).
The Committee reviewed the
evaluation and approved the recommendation to reduce the speed limit of
Windmill Avenue between Sienna Parkway and Antonio Parkway from 40 mph to 35
mph. The estimated cost to install speed limit signage is $1,000.
Compliance
with CEQA:
The proposed project is categorically exempt (Class 1) from the provisions of
CEQA pursuant to CEQA Guidelines Section 15301, because it provides for the
minor alteration of existing public facilities and streets, involving
negligible or no expansion of existing use.
FINANCIAL
IMPACT:
Appropriations and associated
revenue for the installation of appropriate signs and in-road pavement markings
for Orange County Traffic Committee Report - Item A are included in Fund 115,
OC Road, FY 2025-26 Budget. The Highway Safety Improvement Program Cycle 12
Fund will reimburse the County 90 percent of the installation costs after
completion of the project.
Appropriations for the installation of
appropriate signs and in-road pavement markings for Orange County Traffic
Committee Report - Item B and Orange County Traffic Committee Report - Item C
are included in Fund 115, OC Road, FY 2025-2026 Budget.
STAFFING
IMPACT:
N/A
ATTACHMENT(S):
Attachment
A - Orange County Traffic Committee Meeting of October 9, 2025 - Agenda
Attachment B - Orange County Traffic Committee Report - Item A
Attachment C - Resolution for Item A
Attachment D - Orange County Traffic Committee Report - Item B
Attachment E - Resolution for Item B
Attachment F - Orange County Traffic Committee Report - Item C
Attachment G - Resolution for Item C
Attachment H - Government Codes
Attachment I - Resolution No. 85-1465