located between the Ang Mo Kio and Braddell stations, while on the CCL, the station is located between the Lorong Chuan and Marymount stations. The NSL have headways of 2 to 5 minutes, while the CCL services have headways of 3.5 to 5 minutes. Station design The NSL station is the only ground-level station on the MRT network. The station was designed with an "open, sunken-plaza" concept allowing natural light onto the tracks. The station has a beige and brick coloured scheme with bougainvillaeas planted outside. The station concourse has a steel roof cladding installed by Robertson Building Systems (RBS) for . During the construction of the CCL, the entrance was upgraded to "capture the essence" of the station being a "gateway" to Bishan. The rebuilt station has a "pyramidal" opened-top aluminium roof over the existing flat roof, allowing sunlight and ventilation into the station. The retail stores around the station use glass panels which are chamfered at the corners, giving balance to the roof. The glass walls are separated from the roofline via a small space at the top such that the roof appears afloat. The paid area has a layered ceiling and design elements made of glass, giving it a spacious atmosphere. A glass canopy connects the station to the retail development of Junction 8. Bishan CCL station is one of eleven stations along the Circle Line designated as Civil Defence (CD) shelters, which can be activated during national emergencies. Apart from reinforced construction, the stations are designed and equipped with facilities to ensure the environment is tolerable if the station is used as a shelter. These facilities include protective blast doors, decontamination facilities, ventilation systems, power and water supply systems and a dry toilet system. Public artwork Move! The artwork Move! by Soh Ee Shaun is displayed at the CCL station as part of the network's Art-in-Transit programme. The artwork consists of three murals – The Family, The Scientist and The Heartland – each of which is made of 16 glass panels, all cast in film. The artwork reflects the artist's view of the "mindless rush of commuters" through the station. The Family, a mural mainly in yellow and black, depicts ordinary activities that are part of Singapore's "air-conditioned" lifestyle. The Scientist portrays "larger-than-life" scientists surrounded by modern technology such as rockets, robots and fighter jets; this mural is designed in blue and black on a canvas.