Intercity trains are very common in the Netherlands, but may differ from each other. While some intercity trains only call at larger stations, some other may also call at smaller stations or at all intermediate stations along a short stretch of its route. Hence, some stations may be served by one intercity train while another may pass it. For example, the Intercity trains between Arnhem Central station and Utrecht Central station alternately serve Driebergen-Zeist or Veenendaal-De Klomp (and both when the frequency is lowered from 4tph to 2tph in the evening). Often, intercity trains run as local trains along the very end of its route. For example, the Nijmegen to Den Helder intercity runs as regular intercity until Alkmaar, serving larger stations only, but running as local train between Alkmaar and Den Helder, serving all intermediate stations.