In this note a qualitative answer is given to the question whether placing advertising signs along motorways has an influence on traffic safety. It can be stated in general that especially the circumstances in which the driving task has to be performed are important for the possible effect of roadside advertising on traffic safety. To a certain degree drivers are well able to determine whether they pay attention to advertising. Confusion between advertising and traffic signs or other traffic signals should be prevented as much as possible. From the traffic safety point of view, it is important to develop a norm that determines to what degree distraction caused by advertising signs along roads can be. The assumption signs along roads can be. The assumption is that the longer roadside advertising holds the road user attention, the greater the chance of seeing traffic-relevant objects either too late or not at all.
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