Before revision: A transit map is a topological map in the form of a schematic diagram used to illustrate the routes and stations within a public transport system—whether this be bus lines, tramways , rapid transit, commuter rail or ferry routes.
After revision: A transit map is a topological map in the form of a schematic diagram used to illustrate the routes and stations within a public transport system—whether this be bus tram, , rapid transit, commuter rail or ferry routes.