This sign indicates a tram stop, and the traffic rules regarding bus/tram stops apply.

According to the traffic rules, stopping (and thereby also parking) is prohibited:

at a widening of the road for a bus, taxi or tram stop

less than 20 metres from an official traffic sign for such stop

However, stopping for disembarkation or embarkation purposes is *not prohibited* if it does not obstruct buses, taxis or trams. However, stopping for disembarkation or embarkation purposes is not prohibited if it does not obstruct buses, taxis or trams.