HomeMy WebLinkAboutT&T Commission - 07/08-2021 - Regular Meeting TRAFFIC & TRANSPORTATION
COMMISSION
AGENDA
July 08, 2021
6:30 P.M.
Diamond Bar City Hall - Windmill Room
21810 Copley Drive, Diamond Bar, CA 91765
Members of the Traffic and Transportation Commission and limited staff may be
physically present for this meeting. If you would like to attend this meeting in
person, please note that face coverings are encouraged to be worn when inside the
building. Members of the public may also participate in the meeting telephonically
via Go-To-Webinar:
https://attendee.gotowebinar.com/register/7634613334961170443
Dial in: +1 (415) 930-5321 – Access Code: 508-990-018
Chairperson Andrew Wong
Vice Chairperson Kim Hsieh
Commissioner Gary Busteed
Commissioner Surendra Mehta
Commissioner Cynthia Quan
Written materials distributed to the Traffic and Transportation Commission within 72 hours
of the Traffic and Transportation Commission meeting are available for public inspection
immediately upon distribution at the front counter kiosk of City Hall at 21810 Copley Drive,
Diamond Bar, California, during normal business hours and on the City’s website at
www.diamondbarca.gov.
Copies of staff reports or other written documentation relating to agenda items are on file in
the Public Works Department, located at 21810 Copley Drive, and are available for public
inspection. If you have questions regarding an agenda item, please call 909.839.7040
during regular business hours.
In an effort to comply with the requirements of Title II of the Americans with Disabilities Act
of 1990, the City of Diamond Bar requires that any person in need of any type of special
equipment, assistance or accommodation(s) in order to communicate at a City public
meeting must inform the Public Works Department at 909.839.7040 a minimum of 72 hours
prior to the scheduled meeting.
TRAFFIC AND TRANSPORTATION COMMISSION MEETING RULES
Welcome to the meeting of the Traffic and Transportation Commission. Meetings are open to
the public. You are invited to attend either in person or on-line to participate.
PUBLIC INPUT
Members of the public may address the Commission on any item of business on the agenda
during the time the item is taken up by the Commission. In addition, members of the public
may, during the Public Comment period, address the Commission on any item or any matter not
on the agenda and within the Commission’s subject matter jurisdiction. Persons wishing to
speak should submit a speaker slip to the meeting clerk or, if you will be participating via
teleconference, please provide your request in writing to publicworks@diamondbarca.gov at
least 24 hours prior to the meeting. Any material to be submitted to the Traffic and
Transportation Commission at the meeting should be submitted through the meeting clerk.
Speakers are limited to five minutes per agenda item, unless determined otherwise. The
Commissioners may adjust this time limit depending on the number of people wishing to speak,
the complexity of the matter, the length of the agenda, the hour and any other relevant
consideration. Speakers may address the Commission only once on an agenda item, except
during public hearings, when the speaker may be afforded a rebuttal.
Public comments must be directed to the Commission. Behavior that disrupts the orderly
conduct of the meeting may result in the speaker being removed from the Commission meeting
room or muted via teleconference.
INFORMATION RELATING TO AGENDAS AND ACTIONS OF THE COMMISSION
Agendas for regular Traffic and Transportation Commission meetings are available 72 hours
prior to the meeting and are posted in the City’s regular posting locations, and on the City’s
website at www.diamondbarca.gov. A full agenda packet is available for review during the
meeting, at the back of the meeting room. The Traffic and Transportation Commission may
take action on any item listed on the agenda.
ACCOMMODATIONS FOR THE DISABLED
A cordless microphone is available for those persons with mobility impairments who cannot
access the podium in order to make a public comment. Sign language interpretation is available
by providing the City Clerk three business days’ notice in advance of a meeting. Please
telephone (909) 839-7010 between 7:30 a.m. and 5:30 p.m. Monday through Thursday and 7:30
a.m. to 4:30 p.m. on Fridays.
HELPFUL PHONE NUMBERS
Computer access to agendas: www.diamondbarca.gov
General information: (909) 839-7040
Written materials distributed to the Traffic & Transportation Commission within 72 hours of the Traffic &
Transportation Commission meeting are available for public inspection immediately upon distribution in
the City Clerk’s Office at 21810 Copley Dr., Diamond Bar, California, during normal business hours.
CITY OF DIAMOND BAR
TRAFFIC AND TRANSPORTATION COMMISSION
AGENDA
Thursday, July 08, 2021
WINDMILL COMMUNITY ROOM
Diamond Bar City Hall
21810 Copley Drive, Diamond Bar
CALL TO ORDER: 6:30 P.M.
PLEDGE OF ALLEGIANCE: Commissioner Mehta
ROLL CALL: Commissioners Busteed, Mehta, Quan, Vice-
Chair Hsieh, Chair Wong
I. APPROVAL OF MINUTES:
A. T&T Commission Meeting Minutes of May 13, 2021
Recommended Action: Receive & File
II. PUBLIC COMMENTS:
This is the time and place for the general public to address the Commission.
Items to be discussed here are those which do not already appear on this
agenda.
III. ITEMS FROM STAFF:
A. Traffic Statistics for April & May 2021
Recommended Action: Receive and File
B. Monthly Update of Various Projects/Programs
Recommended Action: Receive and File
IV. NEW BUSINESS
V. STATUS OF PREVIOUS ACTION ITEMS
JULY 8, 2021 PAGE 2 TRAFFIC AND TRANSPORTATION COMMISSION
VI. ITEMS FROM COMMISSIONERS:
VII. SCHEDULE OF FUTURE CITY EVENTS:
A. PLANNING COMMISSION MEETING – Tuesday, July 13, 2021 – 6:30 p.m.,
Diamond Bar City Hall Windmill Community Room, 21810 Copley Drive
B. CONCERT IN THE PARK Featuring BUMPTOWN (Disco/Old School/Latin) -
Wednesday, July 14, 2021 – 6:30 p.m. – 8:30 p.m., Summitridge Park, 1425
Summitridge Drive (adjacent to Diamond Bar Center)
C. CITY COUNCIL MEETING – July 20, 2021 – 6:30 p.m., Diamond Bar City Hall
Windmill Community Room, 21810 Copley Drive
D. CONCERT IN THE PARK Featuring COLD DUCK (R&B Variety) - Wednesday,
July 21, 2021 – 6:30 p.m. – 8:30 p.m., Summitridge Park, 1425 Summitridge
Drive (adjacent to Diamond Bar Center)
E. PARKS AND RECREATION COMMISSION MEETING – Thursday, July 22,
2021 – 6:30 p.m., Diamond Bar City Hall Windmill Community Room, 21810
Copley Drive
F. PLANNING COMMISSION MEETING – Tuesday, July 27, 2021 – 6:30 p.m.,
Diamond Bar City Hall Windmill Community Room, 21810 Copley Drive
G. CONCERT IN THE PARK Featuring 80s ALL STARS (80s Hits) - Wednesday,
July 28, 2021 – 6:30 p.m. – 8:30 p.m., Summitridge Park, 1425 Summitridge
Drive (adjacent to Diamond Bar Center)
H. CITY COUNCIL MEETING – August 3, 2021 – 6:30 p.m., Diamond Bar City
Hall Windmill Community Room, 21810 Copley Drive
I. CONCERT IN THE PARK Featuring UPSTREAM (Caribbean Music) -
Wednesday, August 4, 2021 – 6:30 p.m. – 8:30 p.m., Summitridge Park, 1425
Summitridge Drive (adjacent to Diamond Bar Center)
J. PLANNING COMMISSION MEETING – Tuesday, August 10, 2021 – 6:30
p.m., Diamond Bar City Hall Windmill Community Room, 21810 Copley Drive
K. CITY COUNCIL MEETING – August 17, 2021 – 6:30 p.m., Diamond Bar City
Hall Windmill Community Room, 21810 Copley Drive
L. PLANNING COMMISSION MEETING – Tuesday, August 24, 2021 – 6:30
p.m., Diamond Bar City Hall Windmill Community Room, 21810 Copley Drive
M. CITY COUNCIL MEETING – September 7, 2021 – 6:30 p.m., Diamond Bar
City Hall Windmill Community Room, 21810 Copley Drive
JULY 8, 2021 PAGE 3 TRAFFIC AND TRANSPORTATION COMMISSION
N. TRAFFIC & TRANSPORTATION COMMISSION MEETING – Thursday,
September 9, 2021 - 6:30 p.m., Diamond Bar City Hall Windmill Community
Room, 21810 Copley Drive
VIII. ADJOURNMENT
TRAFFIC & TRANSPORTATION COMMISSION
AGENDA REPORT
AGENDA ITEM NUMBER:
1.A
MEETING DATE:
July 8, 2021
TO:
Chair and Members of the Traffic and Transportation
Commission
FROM: David G. Liu, Public Works Director/City Engineer
SUBJECT: T&T Commission Meeting Minutes of May 13, 2021
RECOMMENDATION: Receive & File
Attached, for your review, are the T&T Commission Meeting Minutes of May 13, 2021.
Attachments:
1. T&T Minutes - 5-13-21
CITY OF DIAMOND BAR ~ 21810 COPLEY DRIVE ~ DIAMOND BAR, CA 91765 ~ TEL. (909) 839-7040 ~ FAX (909) 861-3117
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CITY OF DIAMOND BAR
MINUTES OF THE TRAFFIC AND TRANSPORTATION COMMISSION MEETING
DIAMOND BAR CITY HALL WINDMILL ROOM
21810 COPLEY DRIVE, DIAMOND BAR, CA 91765
MAY 13, 2021
Consistent with COVID-19 regulations, Commissioners appeared in-
person and telephonically, and staff were physically present for the
meeting. Public seating was limited due to distancing requirements on a
first-come, first-serve basis and members of the public were encouraged
to participate and address the Commission via teleconfere nce.
CALL TO ORDER:
Chairperson Wong called the meeting to order at 6:45 p.m.
PLEDGE OF ALLEGIANCE: Commissioner Busteed led the Pledge of
Allegiance.
ROLL CALL: Commissioners Gary Busteed, Surendra Mehta,
Chair Andrew Wong
Present Telephonically: Commissioner Cynthia Quan, Vice-Chair Kim
Hsieh
Staff present: David Liu, Public Works Director; Hal Ghafari,
Public Works Manager/Assistant City Engineer;
Christian Malpica, Associate Engineer; Nicholas
“Nick” Delgado, Engineering Technician; Marcy
Hilario, Administrative Coordinator
I. APPROVAL OF MINUTES:
A. Traffic and Transportation Commission Meeting Minutes of March 11, 2021.
VC/Hsieh moved, C/Quan seconded, to approve the Meeting Minutes of March
11, 2021 as presented. Motion carried by the following Roll Call vote:
AYES: COMMISSIONERS: Busteed, Mehta, Quan, VC/Hsieh,
Chair/Wong
NOES: COMMISSIONERS: None
ABSENT: COMMISSIONERS: None
II. PUBLIC COMMENTS: None
1.A.a
Packet Pg. 7 Attachment: T&T Minutes - 5-13-21 (T&T Commission Meeting Minutes of May13, 2021)
MAY 13, 2021 PAGE 2 T&T COMMISSION
III. ITEMS FROM STAFF:
A. TRAFFIC STATISTICS – FEBRUARY AND MARCH 2021.
VC/Hsieh questioned the increase in citations and collisions for February and
March.
Following discussion, C/Mehta moved, C/Quan seconded, to receive and file
the February and March 2021 Traffic Statistics. Motion carried by the
following Roll Call vote:
AYES: COMMISSIONERS: Busteed, Mehta, Quan, VC/Hsieh,
Chair/Wong
NOES: COMMISSIONERS: None
ABSENT: COMMISSIONERS: None
B. MONTHLY UPDATES OF VARIOUS PROJECTS/PROGRAMS:
A. Adaptive Traffic Signal Control Signal System (ATCS) - AE/Malpica -
Staff continues to see slight increases in traffic and the ATCS continues to
learn and adjust accordingly to accommodate the increase in the arterials
during weekday rush hour traffic.
B. Professional On-Call Traffic and Transportation Engineering Services
Request for Proposals (RFP) – AE/Malpica - The current consultant services
agreements will expire on June 30, 2021. Therefore, on March 18, 2021, staff
issued a Request for Proposals (RFP) inviting qualified consultants to submit
proposals for traffic and transportation engineering services. A total of eleven
(11) proposals were received on April 20, 2021, and are currently under
review. Staff will present the list of potential consultants to the City Council for
consideration and approval in June.
C. Caltrans Pavement Rehabilitation Project on State Route 57 Freeway
– AE/Malpica - Caltrans has not been able to schedule the pavement
rehabilitation work and staff continues to work closely with the agency to
update the Commission accordingly.
D. Grand Avenue/Golden Springs Drive Intersection Improvements –
AE/Malpica - This project is underway as scheduled. As of the first week of
May 2021, the project is now 20% completed. Slope grading inside the golf
course is currently underway and tentatively scheduled to be completed within
the next couple of weeks. This will be followed by electrical work, in
preparation for the streetscape improvements, and installation of the new
decorative traffic signal poles. A short YouTube video is available to observe
the progression of work at the median along Grand Avenue, north of Golden
Springs Drive. When the project is complete, staff will provide a time-lapse
video of the entire project.
1.A.a
Packet Pg. 8 Attachment: T&T Minutes - 5-13-21 (T&T Commission Meeting Minutes of May13, 2021)
MAY 13, 2021 PAGE 3 T&T COMMISSION
E. Local Roadway Safety Plan (LRSP) – AE/Malpica - The final draft report
for the development of the LRSP is currently under review by staff. The report
will lay out a plan to enhance roadway safety through engineering
countermeasures implementation, education, and enforcement investments, as
well as working with schools to provide education to students. Staff will
continue to update the Commission at future meetings.
F. NTMP/Hawkwood Drive Neighborhood – PWM/Ghafari - Speed and
volume counts were collected and are currently under review. The first NTMP
meeting will be scheduled after the neighborhood limits are determined. Staff
will update the Commission at future meetings regarding the first neighborhood
meeting date.
G. NTMP/Del Sol Lane Neighborhood – PWM/Ghafari - Staff is currently
working with the City’s On-Call Traffic Engineering Consultant to prepare an
initial traffic calming plan for the neighborhood. This plan will be presented at a
second NTMP neighborhood meeting, where residents will have the
opportunity to share their thoughts and concerns on the proposed measures.
Staff will advise the Commission when the second neighborhood meeting date
is scheduled.
H. Diamond Bar Boulevard Rehabilitation (Mountain Laurel Way to
Pathfinder Road) – PWM/Ghafari – Of the ten (10) bid proposals received on
March 24, 2021, R.J. Noble Company, Inc. was the lowest responsive bidder
with a base bid amount of $878,511. The contract was approved by City
Council at its April 20, 2021 meeting and the Notice to Proceed was issued on
April 28, 2021. Construction is slated to begin May 24, 2021, and be
completed within forty-five (45) working days.
I. Overgrown Tree Removal at 800 N. Grand Avenue at Lavender Drive
– AE/Delgado - On Saturday, April 24th, contractors for the Diamond Bar Villas
Homeowners Association (HOA) removed an overgrown Eucalyptus tree from
their private property at 800 N. Grand Avenue, which had become a hazard for
vehicle traffic and pedestrians due to lack of maintenance. Given the tree’s
large canopy and its overhang onto Grand Avenue, staff determined that a
temporary northbound lane road closure was the most appropriate option for
contractors to safely trim and remove the tree . Work was scheduled on a
Saturday in coordination with the HOA to minimize any impacts to commuter
traffic and avoid conflict with the Grand Avenue and Golden Springs Drive
intersection improvements project. Work was successfully completed within
hours after commencement and no complaints or negative feedback regarding
the work were received by staff.
J. Upcoming Construction Projects – AE/Delgado - Staff has approved
plans and issued encroachment permits for the following private utility
improvement projects that are anticipated to start construction in the coming
weeks:
1.A.a
Packet Pg. 9 Attachment: T&T Minutes - 5-13-21 (T&T Commission Meeting Minutes of May13, 2021)
MAY 13, 2021 PAGE 4 T&T COMMISSION
• MCI Metro (Verizon) – Grand Avenue at Diamond Bar Boulevard -
Installation of New Underground Fiber Optic Cable
• MCI Metro (Verizon) – Golden Springs Drive from Diamond Bar Boulevard
to Summitridge Avenue - Installation of New Underground Fiber Optic Cable
• MCI Metro (Verizon) – Golden Springs Drive from Torito Lane to Carpio
Drive - Installation of New Underground Fiber Optic Cable
• Union Pacific Railroad – Lemon Avenue north of Lycoming Street – Railroad
Crossing Maintenance
• Walnut Valley Water District – Golden Springs Drive at Gona Court –
Installation of a Water Mainline Flow Control Valve
• Walnut Valley Water District – Pathfinder Road at Brea Canyon Road –
Pathfinder Reservoir Mainline Extension.
The City’s Public Works Inspector monitors all active construction projects to
ensure that work is completed per the approved plans and permit conditions.
C/Quan moved, C/Busteed seconded, to receive and file the Monthly Updates
of Various Projects/Programs report. Motion carried by the following Roll Call
vote:
AYES: COMMISSIONERS: Busteed, Mehta, Quan, VC/Hsieh,
Chair/Wong
NOES: COMMISSIONERS: None
ABSENT: COMMISSIONERS: None
IV. OLD BUSINESS: None
V. NEW BUSINESS:
A. FY 2021-22 PROPOSED CIP BUDGET – PWD/Liu
Following presentation and discussion, C/Busteed moved, C/Mehta seconded,
to receive and file the FY 2021-22 proposed CIP Budget report. Motion carried
by the following Roll Call vote:
AYES: COMMISSIONERS: Busteed, Mehta, Quan, VC/Hsieh,
Chair/Wong
NOES: COMMISSIONERS: None
ABSENT: COMMISSIONERS: None
1.A.a
Packet Pg. 10 Attachment: T&T Minutes - 5-13-21 (T&T Commission Meeting Minutes of May13, 2021)
MAY 13, 2021 PAGE 5 T&T COMMISSION
PWD/Liu reported on the City Council members and staff’s field meeting with
Congresswoman Kim to provide an overview of the SR57/60 Confluence
project area in consideration of Congresses returning earmarks. As a result, a
Transportation Reauthorization request of $18 million was submitted for
consideration. Other attendees included in the meeting were the City of
Industry, San Gabriel Valley Council of Governments, San Gabriel Valley
Economic Partnership, and Caltrans officials.
VI. STATUS OF PREVIOUS ACTION ITEMS: None
VII. ITEMS FROM COMMISSIONERS:
C/Busteed was concerned about the safety of pedestrians in the sidewalk area at the
intersection of Golden Springs Drive at Grand Avenue.
C/Quan thanked PWD/Liu and the team for the monthly update summaries and the
CIP hardcopy presentation.
Chair/Wong thanked Public Works for their prudent budgetary efforts toward moving
projects forward to keep the City safe and beautifully maintained.
VIII. SCHEDULE OF FUTURE CITY EVENTS: As noted in the Agenda.
ADJOURNMENT: There being no further business to come before the Traffic and
Transportation Commission, Chair/Wong adjourned the meeting at 7:42 p.m. to Thursday,
July 8, 2021.
The foregoing minutes are hereby approved this day of , 2021.
Respectfully Submitted,
______________________________
David G. Liu, Secretary
Attest:
_____________________________
Andrew Wong, Chairperson
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Packet Pg. 11 Attachment: T&T Minutes - 5-13-21 (T&T Commission Meeting Minutes of May13, 2021)
TRAFFIC & TRANSPORTATION COMMISSION
AGENDA REPORT
AGENDA ITEM NUMBER:
3.A
MEETING DATE:
July 8, 2021
TO:
Chair and Members of the Traffic and Transportation
Commission
FROM: David G. Liu, Public Works Director/City Engineer
SUBJECT: Traffic Statistics for April & May 2021
RECOMMENDATION: Receive and File
Attached, for your review, is the Traffic Statistics Report for April and May 2021, as
provided by the L.A. County Sheriff’s Department.
Attachments:
1. Traffic Statistics - April & May 2021
CITY OF DIAMOND BAR ~ 21810 COPLEY DRIVE ~ DIAMOND BAR, CA 91765 ~ TEL. (909) 839-7040 ~ FAX (909) 861-3117
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CITY OF DIAMOND BAR
TRAFFIC STATISTICS
APRIL & MAY 2021
Prepared by:
PUBLIC WORKS DEPARTMENT
Data Provided by:
LOS ANGELES COUNTY SHERIFF’S DEPARTMENT
WALNUT/DIAMOND BAR SHERIFF’S STATION
Report Completed:
JUNE 2021
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Packet Pg. 13 Attachment: Traffic Statistics - April & May 2021 (Traffic Statistics for April & May 2021)
CITATIONS
22
93
115
8
223
231
Apr-21 May-21
Non-Haz Hazard Total
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Packet Pg. 14 Attachment: Traffic Statistics - April & May 2021 (Traffic Statistics for April & May 2021)
COLLISIONS
4
7
19
15
2322
Apr-21 May-21
INJURY NON INJ TOTAL
APRIL 2021
D.U.I ARREST= 4 D.U.I. COLLISIONS= 2
MAY 2021
D.U.I ARREST= 0 D.U.I. COLLISIONS= 0
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Packet Pg. 15 Attachment: Traffic Statistics - April & May 2021 (Traffic Statistics for April & May 2021)
STREET SWEEPING
627
258
Apr-21 May-21
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Packet Pg. 16 Attachment: Traffic Statistics - April & May 2021 (Traffic Statistics for April & May 2021)
TRAFFIC & TRANSPORTATION COMMISSION
AGENDA REPORT
AGENDA ITEM NUMBER:
3.B
MEETING DATE:
July 8, 2021
TO:
Chair and Members of the Traffic and Transportation
Commission
FROM: David G. Liu, Public Works Director/City Engineer
SUBJECT: Monthly Update of Various Projects/Programs
RECOMMENDATION: Receive and File
A. Adaptive Traffic Signal Control Signal System (ATCS)
Staff continues to monitor the ATCS performance and has made minor technical system
adjustments to accommodate field changes.
B. Professional On-Call Traffic and Transportation Engineering Services/
Request for Proposals (RFP)
Contracts were awarded to Kimley Horn, Iteris, and Fehr & Peers at the June 15th City
Council meeting for on-call traffic and transportation engineering services. Each
contract is for a duration of three (3) years, beginning July 1, 2021. Retaining three (3)
consultants enables the City to efficiently solicit the required three (3) quotes, per the
City’s Purchasing Ordinance, prior to awarding work for certain public projects.
The scope of services includes traffic design, traffic impact analysis, traffic and adaptive
system support, transportation system planning, congestion management support,
traffic signal operation and coordination, funding and g rant support, public meetings
support, and other traffic-related services.
CITY OF DIAMOND BAR ~ 21810 COPLEY DRIVE ~ DIAMOND BAR, CA 91765 ~ TEL. (909) 839-7040 ~ FAX (909) 861-3117
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C. Caltrans Pavement Rehabilitation Project/State Route 57 Freeway
Caltrans and the City entered into a Cooperative Agreement in 2020 under which
Caltrans will display and maintain detours in the City as part of the rehabilitation project
along the SR-57 freeway between the Orange/LA County lines to the SR-60 freeway.
The overall project scope is for pavement replacement with concrete slabs in both
directions of SR-57, which will enhance ride quality and maximize the service of the
roadway.
The High-Occupancy Vehicle (HOV) Lanes on SR-57 have been closed since April
2021 to allow for the first phase of the project. Extended weekend closures are
scheduled to begin in Stage 2 of the p roject. Closures have not been scheduled, as of
yet; however, staff continues to work closely with the agency and will update the
Commission accordingly.
D. Grand Avenue/Golden Springs Drive Intersection Improvements
This project is underway as scheduled, with 35% completion as of today. A 90-day
settlement period for the slopes (inside the golf course) at the southeast of the
intersection will begin mid-July 2021 for preparation of the new relocated tunnel (north
of Golden Springs Drive). Traffic delays are anticipated for the next couple of months
during the installation of the new decorative traffic signal poles, roadway paving,
striping, streetscape improvements, installation of pre-cast architectural features, and
architectural lighting. Staff will continue to work closely with the contractor to minimize
delays at this intersection and will keep the L.A. County Sheriff’s Department, Fire
Station 120, and the public informed of potential delays.
E. NTMP/Featherwood Drive Neighborhood – Neighborhood Traffic Management
Program
A request was made by a resident to address concerns about speeding along
Featherwood Drive, between Looking Glass Drive and Sylvan Glen Road (see attached
neighborhood map). In response to the request, staff mailed out 135 notificatio n letters
to the residents on all affected streets and provided them with the opportunity to
express their support for an NTMP in the area via an online survey petition launched in
June 2021. Meanwhile, speed and volume counts were collected and are curren tly
under review.
To move forward in the NTMP process, the survey responses are required to obtain at
least 51% support for the NTMP. The online survey responses were due by June 25,
2021, and only 13 responses were received by the due date. This leads to about 9.6%
support for the process, which is significantly lower than the required 51% per the
program guidelines. Staff will work with the original requestor to consider other options
to mitigate their traffic concerns along Featherwood Drive.
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F. NTMP/Hawkwood Drive Neighborhood – Neighborhood Traffic Management
Program
The NTMP survey has been mailed out to the residents in the Hawkwood Drive
neighborhood. The letter contains a link to an online survey where residents can petition
to either include or exclude their neighborhood from the NTMP. To date, staff has
received over 20 responses, heavily in favor of being included in the NTMP. This
neighborhood will be split into two (2) separate sub-neighborhoods labeled as Area 1
and Area 2, as shown on the attached Neighborhood Map. Area 1 includes all homes
on Hawkwood Drive, while Area 2 includes all homes on Falcon Ridge Road and the
connected cul-de-sacs. The sub-areas serve to better separate any proposed traffic
calming mitigations and allow residents to have a greater influence on their street’s
NTMP process.
G. NTMP/Del Sol Lane Neighborhood – Neighborhood Traffic Management
Program
A Traffic Engineering Consultant has been selected to prepare a traffic calming plan for
the neighborhood. The plan will then be presented at a second NTMP neighborhood
meeting, where the residents will have the opportunity to share their thoughts and
concerns on the proposed measures. The contract will be awarded at the beginning of
the new Fiscal Year, which began July 1, 2021. Staff will update the Commission at a
future meeting regarding the second NTMP meeting date for this neighborhood.
H. Diamond Bar Boulevard Rehabilitation (Mountain Laurel Way to Pathfinder
Road)
Construction of the project began in late May and is scheduled to be completed by mid-
August. The contractor has completed all concrete improvements, including ADA curb
ramps, curb and gutter, and sidewalk replacement. Pavement grinding began on Friday,
June 24, 2021, at Mountain Laurel Way and is scheduled to continue until Thursday,
July 1, 2021, with paving and striping commencing subsequently. A minimum of one
lane will remain open in each direction at all times. Staff is continuously inspecting the
project and monitoring traffic conditions along the boulevard. Once complete, the project
will have rehabilitated approximately one mile of Diamond Bar Boulevard and enhanced
the bike lane striping along the corridor.
I. Citywide Speed Zone Survey Extension
Pursuant to CVC 40802, jurisdictions are required to have a valid Speed Zone Survey in
order for officers to enforce the posted speed limits on public streets. The Survey
involves gathering speed and volume data on public roadways, excluding residential
streets. The data is analyzed by a registered professional engineer and submitted as a
comprehensive study that recommends the posted speed limits in the City. The Study is
3.B
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valid for 5 years, but can be extended to 7 years if the citing officers have the proper
training and the electronic speed measuring devices have the proper certifications. The
validation can subsequently be extended to 10 years if a registered engineer
determines no significant changes in roadway or traffic conditions have occurred.
The City of Diamond Bar last performed a Citywide Speed Zone Survey in 2014 on 39
roadway segments. The Survey validation was extended to 2021 in 2019. The City
solicited the services of Kimley Horn, a professional engineering firm that has served
the City as an on-call traffic engineering consultant, to study the roadway conditions for
another extension. The study recommended the City extend the validity of the Survey to
10 years, expiring June 9, 2024. Attached is a memo summarizing the extensions to 7
years and 10 years. A copy of this memo has been forwarded to the L.A County
Sheriff’s Department Walnut/Diamond Bar.
J. Upcoming Construction Projects
Staff has approved plans and issued encroachment permits for several utility
improvement projects that are anticipated to start construction in the coming weeks:
• Frontier Communications – Washington Avenue from Brea Canyon Road to City
Limits
o Installation of New Overhead and Underground Fiber Optic Cable
• MCI Metro (Verizon) – Grand Avenue from Golden Springs Drive to Diamond Bar
Boulevard
o Installation of New Underground Fiber Optic Cable
• MCI Metro (Verizon) – Grand Avenue from Diamond Bar Boulevard to
Summitridge Drive
o Installation of New Underground Fiber Optic Cable
• Southern California Edison –Torito Lane at Golden Springs Drive
o Installation of a New SCE Electrical Vault
Public Works staff is committed to ensuring that all construction impacts are properly
mitigated to limit the effect on our community. The City’s Public Works Inspector
monitors all active construction projects to ensure that work is completed per the
approved plans and permit conditions.
K. Local Roadway Safety Plan (LRSP)
The LRSP report has been completed in accordance with the Federal regulations that
requires each State to prepare and implement a Strategic Highway Safety Plan (SHSP).
Cities can implement an LRSP to address local safety needs while also contributing to
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the success of the SHSP. Grant funding is available through the Highway Safety
Improvement Program (HSIP), administered by the California Department of
Transportation (Caltrans), for local LRSP projects. Grant applications for the next HSIP
Cycle 11 are expected to open by April of 2022. Preparation of Diamond Bar’s LRSP
was made possible with a $72,000 Caltrans grant, matched by $8,000 in City funds, for
an overall project cost of $80,000 total. An overview of the background and available
data will be presented tonight.
Attachments:
1. Item E Attachment - Neighborhood Map - Featherwood
2. Item F Attachment - Neighborhood Map - Hawkwood
3. Item I Attachment - Memo to File - Speed Zone Survey Extension 6.9.2021
3.B
Packet Pg. 21
3.B.a
Packet Pg. 22 Attachment: Item E Attachment - Neighborhood Map - Featherwood (Monthly Update of Various
3.B.b
Packet Pg. 23 Attachment: Item F Attachment - Neighborhood Map - Hawkwood (Monthly Update of Various
3.B.cPacket Pg. 24Attachment: Item I Attachment - Memo to File - Speed Zone Survey Extension 6.9.2021 (Monthly Update of Various Projects/Programs)
3.B.cPacket Pg. 25Attachment: Item I Attachment - Memo to File - Speed Zone Survey Extension 6.9.2021 (Monthly Update of Various Projects/Programs)
kimley-horn.com 660 South Figueroa Street, Suite 2050, Los Angeles, CA 90017 213 261 4040
June 9, 2021
Fabian P. Aoun, PE
Associate Engineer
Public Works/Engineering Department
City of Diamond Bar
21810 Copley Drive
Diamond Bar, CA 91765
RE: Extension of 2014 Engineering and Traffic Survey through June 2024
Dear Mr. Aoun,
Pursuant to California Vehicle Code (CVC) regulations for establishing speed limits on local
roadways, we have reviewed the current roadway and traffic conditions for the roadways listed in the
2014 Citywide Speed Zone Survey. The purpose of this review was to determine whether or not any
significant changes in roadway or traffic conditions have occurred. CVC Section 40802 allows the
time provision for an Engineering and Traffic Survey (E&TS) to be extended to 10 years when certain
criteria listed therein are met and no significant changes in roadway or traffic conditions have
occurred, including changes in adjoining property or land use, roadway width, or traffic volume.
It should be noted that in March 2019 the 2014 Citywide Speed Zone Survey report was extended
from five (5) to seven (7) years (expiring in June 2021) for all thirty-nine (39) roadway segments.
The following are the major roadway/land use projects completed or ongoing in the City of Diamond
Bar since the 2014 E&TS as confirmed by City Staff:
57/60 Confluence Project is a three-phase program of improvements consisting of ramp and
interchange reconfigurations as well as the addition of auxiliary collector/distributor and
bypass lanes. Phases I and IIB have been completed which include construction of ramps
and interim operational improvements to Grand Avenue interchange. Construction Phase IIA
is currently ongoing which includes rebuilding the intersection of Grand Avenue and Golden
Springs Drive. Phase III is in final design phase, which is scheduled to be completed in late
2021.
Adaptive Traffic Signal Control System was recently implemented by the City along three
corridors – Diamond Bar Boulevard, Golden Springs Drive, and Grand Avenue. The system is
currently going through testing, fine-tuning and troubleshooting.
State Route 60/Lemon Avenue Interchange Project constructed new on- and off-ramps at
Lemon Avenue and closed Brea Canyon Road on- and off-ramps in 2018.
Willow Heights Residential Project completed in 2016 includes 182 single family
condominiums/townhomes and is located along Diamond Bar Boulevard east of its
intersection with Brea Canyon Road. This project also included addition of a new traffic
signal at the intersection of Diamond Bar Boulevard and Willow Heights Drive.
3.B.c
Packet Pg. 26 Attachment: Item I Attachment - Memo to File - Speed Zone Survey Extension 6.9.2021 (Monthly Update of Various Projects/Programs)
Page 2
kimley-horn.com 660 South Figueroa Street, Suite 2050, Los Angeles, CA 90017 213 261 4040
Out of these projects, the ongoing 57/60 Confluence project is a major project which affects the traffic
volumes on major arterials in the City. The travel patterns and traffic volumes are still adjusting due
to the other recently completed and ongoing projects. Given these conditions, we recommend the
extension of the 2014 E&TS to 10 years with a complete update to the Citywide Speed Survey
completed prior to the year 2024. It is also recommended that the City continue to monitor the
progress of these major improvement projects by collecting traffic volume and collision data for
periodical assessment.
Please contact me at (213) 261-4037 or sri.chakravarthy@kimley-horn.com should you have any
questions or comments.
Sincerely,
Sri Chakravarthy, P.E., T.E.
Traffic Engineer, TR 2531
3.B.c
Packet Pg. 27 Attachment: Item I Attachment - Memo to File - Speed Zone Survey Extension 6.9.2021 (Monthly Update of Various Projects/Programs)