Preference of Public Transport and Emergency Vehicles Using V2X

Demonstration of Vehicle Priority via SREM and Onboard Computer Integration

This video demonstrates the intelligent prioritization of a vehicle in urban traffic using V2X technology. The vehicle sends a SREM message (Signal Request Message) to request priority at a traffic light-controlled intersection.

The traffic signal controller receives the priority request (SREM) and, based on the current traffic situation, issues an appropriate response message to confirm the change in the signal cycle.

The onboard EPIS computer is fully integrated with this system via an OBU unit and displays:

• the current status of the traffic lights in real time
• time until green light in case of active priority and allowed maneuvers

The system enables smooth passage through intersections without the need to stop, thus reducing response time and increasing safety.

Demonstration of Automatic Emergency Vehicle Stop Using V2X Technology

The video shows a situation where a car approaches a tram standing at a stop. Thanks to V2X (Vehicle-to-Everything) technology, real-time information exchange occurs between the tram and the car.

The tram transmits a message about its position and status (standing at the stop).

The vehicle receives this information, and its driver assistance system immediately assesses the potential collision risk and stops the vehicle.