to Hougang Central Bus Interchange. This station will become an interchange station along the Cross Island line when the Cross Island line stage 1 opens in 2030. Kovan MRT station Kovan MRT station is an underground Mass Rapid Transit (MRT) station on the North East line in Hougang planning area. With the opening of Kovan station, the former Hougang South Bus Interchange subsequently ceased operations in February 2004 and its services were transferred to Hougang Central Bus Interchange located next to Hougang MRT station. Tai Seng MRT station Tai Seng MRT station is an underground Mass Rapid Transit (MRT) station on the Circle line, situated on the boundary of Hougang planning area. Located along Upper Paya Lebar Road, Tai Seng station was named after and primarily serves the industrial clusters at Tai Seng, which in turn means 'big accomplishment' in Chinese. The name was first used on a rubber factory constructed in the area in 1917. Defu MRT station Defu MRT station is a future underground Mass Rapid Transit station on the Cross Island MRT line in Hougang planning area, Singapore. It will serve the Defu Industrial Park. Serangoon North MRT station Serangoon North MRT station is a future underground Mass Rapid Transit station on the Cross Island MRT line located on the boundary of Hougang planning area in Singapore. Mass Rapid Transit Depots Kim Chuan Depot Kim Chuan Depot is a train depot for the Mass Rapid Transit system in Singapore. The depot is constructed fully underground and provides maintenance, stabling and operational facilities for the Circle Line. It is located in Hougang, along Upper Paya Lebar Road, and is accessible via Kim Chuan Road. It used to be the first depot in Singapore to serve two independently operated MRT lines, until the adjacent Tai Seng Facility Building, became operational with the revenue operation of the Downtown Line Stage 3 on 21 October 2017. Tai Seng Facility Building Tai Seng Facility Building, abbreviated as TSFB, (or Tai Seng) is an underground train depot for the Mass Rapid Transit system in Singapore. The depot is constructed towards the east of Kim Chuan Depot and will provide maintenance, stabling and operational facilities for the Downtown Line. It is located in Hougang along Bartley Road East. It is accessible via a surface building located along Bartley Road East. The depot is approximately 52 metres wide, 295 metres long and 20 metres deep.