Video surveillance is permitted at danger points, bus stops, railway stations and airports and only the data set will be stored permanently for which there is suspicion of criminal activity. In other respects, the data must be deleted. The area covered by video surveillance must be clearly marked by floor lines for each citizen, so that they can decide for themselves whether to become part of the recordings or to choose other means of transport. At the same time, the lines serve the purpose of preventive warding off of danger since everyone must know that they are now being recorded.