Metropolis tramLines is a tram service in Metropolis. It is the largest of 3 CRail systems and is the largest system in Metropolis. It's furthest stations are King Bridge, City Limits, and Miami. The service runs frequently between Main Street, the bridges, New Sweden Drive, and the other large streets in Metropolis Uptown. A line is planned to coincide with ComityRail (Commuter City Rail) to go into Avondale and continue service there, however, the idea has been deemed unreasonable and the line for Avondale has been planned exclusively for the Avondale area excluding the Ghost City Bridge.

The rail lines were mainly made by the Transit Bureau (SHODASAW, gertrudestein [John], and hamsterrangler] whose building is in Metropolis and across from the City Limits station near the Ghost City Bridge.