MRT PURPLE LINE

The MRT Purple line (Thai: รถไฟฟ้ามหานคร สายสีม่วง), officially the MRT Chalong Ratchadham line (Thai: รถไฟฟ้ามหานคร สายฉลองรัชธรรม), is a rapid transit line of Bangkok's Metropolitan Rapid Transit system for the Mass Rapid Transit Authority of Thailand (MRTA) in the Bangkok Metropolitan Region and Nonthaburi Province. It opened for service on 6 August 2016 and is the second MRT line operated by BEM (formerly BMCL) and the city's fifth rapid transit line, following the Sukhumvit Line, Silom Line, MRT Blue Line, and Airport Rail Link.

A 23.6km Southern extension from Tao Poon to Rat Burana via Wong Wian Yai was approved for tender by the Thai Cabinet on 25 July 2017. The tender was due to be out in late 2017, but has been delayed until 2018. If construction commences in the second half of 2018, the extension will open in 2024.