Another beautiful and interesting line to add is the line L of the Transilien (Paris regional rapid transit system) - https://fr.wikipedia.org/wiki/Ligne_L_du_Transilien. It goes from Saint-Lazare Station in Paris and has 3 branches: to Versailles (Versailles Rive-Droite station - https://en.wikipedia.org/wiki/Gare_de_Versailles–Rive_Droite ), to Saint-Nom-la-Bretèche, where it connects to the tangential section - which is currently closed in order to create a Express Tram line instead- of the line L (Noisy-le-Roi - Saint-Germain-en-Laye), using the tracks of the Grande Ceinture (Greater Loopline), and to Cergy-le-Haut. Geographical map of the L line The line L has a total length of 86 km, and shares big parts of her route with other lines, and, at a moment, even goes side-by-side with the T2 tram line (https://en.wikipedia.org/wiki/Île-de-France_tramway_Line_2) Line scheme with connections to other lines Two types of EMU are used on this line. The good old Z6400 - https://en.wikipedia.org/wiki/SNCF_Class_Z_6400 And the Z50000 "Francilien" - https://en.wikipedia.org/wiki/SNCF_Class_Z_50000 It is a really beautiful route, with interesting rolling stock, so I think I would not be the only one to be happy if it was added to TSW PS: some videos to see, how the line looks like from the driver's seat Paris-Versailles in Z50000 (YouTube channel Mika67407) Paris-Saint-Nom in Z6400 (YouTube channel France Cab Ride) A ride on the Cergy branch in Z6400 (YouTube channel Mika67407) Paris-Cergy in Z6400 (YouTube channel France Cab Ride) A night ride on the Cergy branch to Paris in Z50000 (YouTube channel MomoFerro) Another proposal, a line that I would very much like to see in TSW, the RER B: https://forums.dovetailgames.com/threads/rer-b-ligne-de-sceaux-paris-rapid-transit-system.16213/
This looks like a very nice commuter route, and is something I would consider buying even if I've never been to France. Just curious is there any freight activity in this line or only passenger services?
It depends on the branch, but you can see some freight trains at some places, but the line uses mostly passenger-only routes. If you want a route around Paris with both passenger and freight, it would one of these: RER B Nord (northern part), RER D, Transilien H, K, P, R.