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City of Stockton
· City
· California
Professional Support Services for the D4 Traffic Controller System
PROPOSALS DUE
October 09, 2026, 11:55 pm PDT
Closed
WHAT THEY WANT
(Summarized from the RFP)
The City of Stockton Public Works Department is seeking a firm to provide five years of locally funded professional support for the D4 traffic signal controller software that runs the City's traffic signal network (City Project No. WT15022). The City operates more than 300 traffic signals and HAWK beacons, all on controllers running the D4 operating system, which the City licenses from Advanced Traffic Solutions, LLC and runs on Siemens/Yunex M60 and McCain EX2 controllers managed through a KITS central traffic management system. Because every signal depends on D4, the City needs the software to run reliably, remain usable, and have issues resolved quickly.
DOCUMENT SET
5 documents
· 5.6MB
CHANGES SINCE PUBLISHED
1 change
WHAT OTHERS ASKED
2 questions answered
▶
Are mandatory compliance forms and supporting documents required by Attachment B (including Exhibits A, B, and D and any required DIR registration documentation) to be submitted with this proposal or later, after award? If with the proposal, are they excluded from the 15-page limit? Is the cost proposal excluded from the 15-page limit?
Compliance
▶
Because Project WT15022 consists of professional software support services and does not appear to include work subject to prevailing-wage/public-works requirements, can you confirm whether DIR registration and the Exhibit A Labor Compliance Self-Certification are required for this proposal?
Compliance
ABOUT THIS RFP
RFP number
WT15022
Budget
Not Assigned
Published
Entity type
City
State
California
Summarized from the City of Stockton portal.
HOW TO SUBMIT
Email an electronic copy of the proposal to Yuriy Honcharuk, Yuriy.Honcharuk@stocktonca.gov, with the subject line 'RFP – D4 TRAFFIC CONTROLLER SYSTEM, WT15022'. Email the fee schedule separately to Nguyet Pham, Nguyet.Pham@stocktonca.gov. Submittals to the wrong address are not accepted. Questions and requests for clarification in writing to Yuriy.Honcharuk@stocktonca.gov; addenda are posted on Bidflash.
NAICS CODES & TAGS
541519
541511
Information Technology Support Services
Transportation and Transit Planning
ACROSS 539 RFPS
MORE THAN
RFPs changed their terms while active.
25 days is the median window from publication to due date; day 16 is the median first change for the 113 that changed. 539 RFPs published and due: July 23 - Sept. 30, 2026.
Bid on five RFPs, and the odds are better than two in three that at least one changes its terms before the deadline. Larger firms have staff tracking this. Start free and you’ll have it at your fingertips too.
This RFP has closed
Proposals were due October 09, 2026, 11:55 pm PDT. Leads tracks active RFPs from posting to deadline.
