The Pink Line mass transit system (Khae Rai - Min Buri) is one of the mass transits planned in Mass Rapid Transit Master Plan in Bangkok Metropolitan Region: M-MAP. The Pink Line network has been planned to accommodate travel demand of the northern Bangkok. According to the M-MAP developed by the Office of Transport and Traffic Policy and Planning (OTP), the Pink Line was assigned as a minor mass transit system in terms of elevated straddle monorail. This project is a monorail system with 34.5 kilometer distance. The MRT Pink line has officially opened for revenue service since December 31st 2023.