After an opening ceremony in the presence of Dutch state secretary Stienje van Velthoven on 17 Mai revenue service started on the 2.3 km extension of RandstadRail route 4 in Zoetermeer two days later. Beginning at previous terminus “Zoetermeer Javalaan” it reaches the new interchange station “Lansingerland Zoetermeer” at the NS mainline The Hague – Utrecht. There you can find some 700 new P&R parking lots. The trrackbed follows an elevated alignment including a viaduct crossing the motorway A12. One intermediate stop is located at Van Tuyllpark. Service RR 4 now runs from De Uithof via Den Haag to Lansingerland Zoetermeer.
RandstadRail RR3 and RR4 are part of a light rail system which in part uses former heavy rail link to Zoetermeer and shares track with the city tramways in The Hague. Tram-Train rolling stock is being used.
Map: http://www.urbanrail.net/eu/nl/dhg/den-haag-randstadrail.htm