The MRT serves more than 240,000 passengers each day. It has 35 operational stations along 43 kilometers (27 mi)[1] of underground route. The Blue Line, officially the Chaloem Ratchamongkhon Line, was the first of the two lines currently in operation. As of 2016, two extensions of the Blue Line are under construction. When completed, the Blue Line will become a loop line around the centre of Bangkok, with an extension to Bang Khae on its western side. The MRT Purple Line, officially the Chalong Ratchadham Line, began its full service on August 6, 2016. MRT Purple Line will connect Bang Sue with Nonthaburi in the north-west, and will be the first public transit line outside the Bangkok Metropolitan Administration.