(1) Vendor needs to provide message exchange platform and mobile device application.– Provide a complete Network–Vehicle–to–Everything (V2X) Message Exchange Platform (MEP) and a mobile device application.– Intelligent message distribution methods, such as geocaching, to efficiently determine which mobile device should receive specific messages based on their geographic location.– Providing real–time access to traffic signal controller data and the ability to support signal priority and pre-emption requests from mobile devices and send vulnerable road user (VRU) notifications and position correction messages to mobile devices.– The Network–V2X MEP will be a center–based system that enables the exchange of V2X messages between roadside equipment, such as traffic signal controllers, and mobile devices using existing Fourth Generation/Fifth Generation (4G/5G) cellular communication systems.– The application will receive infrastructure messages from the MEP, providing similar functionality as On–Board Unit (OBUs), for interactions with V2X infrastructure.(2) Pre–bid meeting will be held on December 09, 2025.(3) All the questions must be submitted no later than December 11, 2025.