This project will provide requirements to support applications for the Maneuver Sharing and Coordinating service (MSCS) in order to improve road safety and traffic efficiency by sharing and coordinating vehicle maneuvers via V2V, V2I and/or V2P communications. The document development will start with concepts and use case scenarios for MSCS, and overview of MSCS systems and operations. It will define message sets for MSCS, and the effort may result in identifying new messages, data frames and data elements in SAE J2735. Requirements on system and communication will be specified. Work and progress from other standard development organizations and projects will be taken into account. This project is expected to result in a MSCS document and suggested updates to SAE J2735.