9 Electronic devices for tracking vehicle traffic flow; electronic devices for tracking vehicle location, speed and direction of travel; electronic devices, namely, road side units (RSUs) that receive information from electronic on-board units (OBUs) installed in motor vehicles; electronic devices, namely, RSUs that transmit information to OBUs installed in motor vehicles; printed circuit boards (PCBs) that are incorporated into RSUs that receive information from OBUs installed in motor vehicles; printed circuit boards (PCBs) that are incorporated into RSUs that transmit information to OBUs installed in motor vehicles; electronic devices, namely, RSUs that receive data from infrastructure components, namely, traffic signal controllers (TSCs); electronic devices, namely, RSUs that send data to infrastructure components, namely, TSCs; PCBs that are incorporated into RSUs that send and receive data with infrastructure components, namely, TSCs; Road Side Unit (RSU) for collecting and tracking all road users at intersections for safe and efficient traffic signal control; On Board Unit (OBU), namely, an in vehicle unit that is used to provide advanced safety applications such as traffic signal preemption (TSP), Emergency vehicle priority (EVP), red-light violation, collision avoidance, and pedestrian collision warning; Traffic Management Equipment comprising computer hardware and downloadable computer software for analyzing collected vehicle data at intersections and in-between intersections for dynamic control and management; Computer software, namely, downloadable computer application software for use in vehicles to track driving data