Video: The Railway Collision Avoidance System (RCAS) by DLR (engl.) https://www.dlr.de/de/kn/medien/videos/copy12_of_osiris4cubesat-das-kleinste-laserterminal-der-welt
advising the driver of the most convenient strategy to follow in order to avoid the danger
advising the driver of the most convenient strategy to follow in order to avoid the danger