sentences:  The Hiekkaharju station has acted as an in-between stop during the construction of the Kerava local railway track.The third track of the main railway was taken into use in 1972 between Helsinki and Hiekkaharju and was continued to Kerava in 1981.Likewise, the fourth track was completed in 1996 between Helsinki and Hiekkaharju and only continued to Kerava in 2004.