Location information on vulnerable road users (VRUs), generated by video and lidar sensors, has been successfully broadcast at University of Michigan’s MCity test bed with SAE J3224-standard sensor data sharing messages (SDSMs) for cooperative perception. The SAE J3224 message standard establishes a common message format for V2X participants to share and build consensus on detected VRU presence, enabling vehicles, drivers, and infrastructure to enhance VRU safety. Broadcasting these messages is important for the growth of the V2X ecosystem because the majority of VRUs – such as pedestrians and bicyclists – are not able and are not expected to have devices that directly communicate with V2X infrastructure and vehicles. The setup at MCity involved P3Mobility software successfully integrating with Advanced Mobility Analytics Group’s (AMAG) state-of-the-art computer-vision enabled Smart Platform. P3Mobility’s software platform enabled V2X roadside units (RSUs) to broadcast SDSMs in real time. This allows both autonomous vehicles and human drivers to receive information on VRUs that may be out of sight of the vehicle.