Abstract: A method for alerting a user of a road vehicle (B-F, 4) for a neighbouring priority vehicle (A, 1) is provided. First data, indicating to the current position of the priority vehicle and the next part of its planned route, are transmitted to other road vehicles the road vehicle and/or its user. The road vehicle and/or its user receives the first data and compares it to second data, indicating the current position of the road vehicle and/or the next part of its planned route. An alert is output to the user when the comparison of the first and second data indicates that the current position or any position within the next part of the planned route of the priority vehicle will coincides with the current position or any position within the next part of a planned route of the road vehicle.