This is a speed bump placed in front of a zebra crossing. Such device saves lives if used in front of each zebra crossing. Only for 2010, statistics show that in Switzerland, 270 people have been severely injured while crossing a zebra, and 20 died. Source: http://www.news.ch/Schlechte+Noten+fuer+Schweizer+Fussgaengerstreifen/519939/detail.htm