A method for controlling at least one of a traffic infrastructure device and an actuator of a traffic participant based on enhanced traffic data, the method comprising: monitoring, by a trigger processor , an area; generating (S1), by the trigger processor , trigger data in case a trigger event is determined in the monitored area and providing the generated trigger data indicating an area-of-interest corresponding to the trigger event to an image data source , wherein the area-of-interest is a subpart of the monitored area; obtaining (S2), by the image data source , image data captured by a capture device restricted on the area-of-interest based on the transmitted trigger data and transmitting the obtained image data to a traffic evaluation processor ; evaluating (S4, S5), by the traffic evaluation processor , the received image data to generate enhanced traffic data on the area-of-interest; and outputting (S6, S7), by the traffic evaluation processor , the generated enhanced traffic data in a control signal , wherein the control signal is configured to control the traffic infrastructure device and/or the actuator of the traffic participant, and characterized in that the method comprises generating (S1) the trigger data based on telemetry data acquired by at least one traffic infrastructure device and/or data on mobile wireless devices in the monitored area includes calculating at least one of a mean traffic density value or a mean velocity value, and the trigger event is determined in case a difference of the calculated mean traffic density value from a predetermined traffic density value exceeds a predetermined traffic density threshold, or the trigger event is determined in case a difference of the calculated mean velocity value from a predetermined mean velocity value exceeds a predetermined velocity threshold. monitoring, by a trigger processor , an area; generating (S1), by the trigger processor , trigger data in case a trigger event is determined in the monitored area and providing the generated trigger data indicating an area-of-interest corresponding to the trigger event to an image data source , wherein the area-of-interest is a subpart of the monitored area; obtaining (S2), by the image data source , image data captured by a capture device restricted on the area-of-interest based on the transmitted trigger data and transmitting the obtained image data to a traffic evaluation processor ; evaluating (S4, S5), by the traffic evaluation processor , the received image data to generate enhanced traffic data on the area-of-interest; and outputting (S6, S7), by the traffic evaluation processor , the generated enhanced traffic data in a control signal , wherein the control signal is configured to control the traffic infrastructure device and/or the actuator of the traffic participant, and characterized in that the method comprises generating (S1) the trigger data based on telemetry data acquired by at least one traffic infrastructure device and/or data on mobile wireless devices in the monitored area includes calculating at least one of a mean traffic density value or a mean velocity value, and the trigger event is determined in case a difference of the calculated mean traffic density value from a predetermined traffic density value exceeds a predetermined traffic density threshold, or the trigger event is determined in case a difference of the calculated mean velocity value from a predetermined mean velocity value exceeds a predetermined velocity threshold. <EOS>