All State and Local Contract Opportunities

Professional Support Services for the D4 Traffic Controller System

Solicitation # WT15022

Posted 9/11/26, 3:00 AM

No Updates

Due 10/9/26, 3:00 AM

State

California

Source

View

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The City of Stockton is requesting proposals for five years of professional support services for the D4 traffic signal controller software system, with proposals due October 9, 2026.

The scope encompasses technical support, maintenance, and operational assistance for the D4 traffic control system. Qualified vendors must demonstrate experience and expertise in D4 traffic controller systems, including software support and traffic signal management. This is a locally funded contract with no state or federal appropriations.

The contract term is five years. Prospective bidders should review the complete bid documents for specific response requirements, pricing structures, service level requirements, and any scheduled pre-bid meetings or site visits.

Generated 9/18/26, 9:14 AM

Name	Description	Size	Type	Posted
Bid Notice-Professional Support Services for the D4 Traffic Controller System.pdf		298KB	PDF	9/11/26

Professional Support Services for the D4 Traffic Controller System

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