The Municipal Transit Line (Mu-Sit) is a transit system located in the city of Quinton on Angeli (Croshaw II) in the United Empire of Earth (UEE). Developed under a government contract by Argo Astronautics, it was based on the company's radial networked transit hub in Port Renatus, Mars (Sol IV). While it is functionally identical to the Prime Transit Monorail, also developed by Argo, the Municipal Line covers a significantly larger area.