Hi! I want to suggest MCC, Moscow Central Circle, i think this route is ideal for TSW. It was built in soviet times and the main function of MCC was transporting workers to the plants and freights between different industries. Then it was used for freight transportation only. But in 2016 it was fully renovated and now it's very comfortable and fast public transport route in Moscow. It's operated both by Russian Railways (RZD) and Moscow Metropolitan. Route have 31 station, many bridges across Moscow river and short underground plot. Passenger train is Lastochka, originally it's Siemens Desiro. There are still some freight services on route. There are some photos of train and some stations. Also there are route map, as you can see route is cycled, so as i think it's real good for TSW. On the second map there are integration of MCC to Metro and Suburban train stations.