IFB 100F-26 Addendum 2~1.docx

This is Addendum 2 Q&A documentation for the Massachusetts Bay Transportation Authority (MBTA) IFB 115-26 Union Square Transit Signal Priority Project in Somerville. The addendum addresses contractor inquiries regarding project scope and equipment specifications. Key clarifications include confirmation that all controllers specified in the plan set must be replaced, including the controller at Somerville/Warren to maintain peer-to-peer connectivity with Union Square controllers. The MBTA clarified that Passenger Real-time Graphics (PRG) equipment operates in the cloud or controller cabinet via GTFS-RT feed rather than on bus hardware, and that contractors are not required to develop acceptance test plans as part of the project scope. The project encompasses transit signal priority installation at three signalized intersections serving five bus routes and trolley service, with implementation utilizing green-extension and early-green signal timing strategies.

Regarding equipment specifications, the MBTA indicated that while Qualified Traffic Control Equipment (QTCE) testing per MassDOT standards is preferred but not mandated, bidders must provide written justification for any equipment that does not meet MassDOT QTCE requirements. A list of compliant equipment is available on the MassDOT website. All controllers must comply with NEMA TS2-2016 standards and NTCIP protocols with high-resolution data logging capabilities. The contract operates on a firm-fixed-price, lump-sum basis and includes a three-year initial service period with optional renewal periods up to four years, renewable up to three times for a maximum 15-year total term.