Hello, dear developers! I will join de proposal of MahoNishizumi - https://forums.dovetailgames.com/threads/ligne-a-réseau-express-régional-rer-a.15129/ , but with some precisions and detail changes. I propose to add this line with only a now disused rolling stock, the MS 61 ( https://en.wikipedia.org/wiki/MS_61 ) - because some users think the french don't give any license because of some security reasons, like some terrorist will learn how to drive a train and hijack one... - I remember the MS 61 on RER A line, and it has this good ol' classic train spirit, and I would be enormously happy to see in in TSW. There was several versions, but characteristics stayed practically unchanged. And since the MS 61 could be used only on 1500 V = routes, there is no need to add the entire A line, but only the sections from Paris to St-Germain and from Paris to Boissy and Marne-la-Vallée. Usually, the MS 61 runned between St-Germain and Boissy (+/- 45 km) but could also run to Marne-la-Vallée (a +/- 27 km branch), so the route would be either a bit short (45 km), or quite long: +/- 72 km (and that'd be nice, btw). Plus, adding this line would add the oldest line in France: Paris to St-Germain, which is very nice. Line Map ( https://en.wikipedia.org/wiki/RER_A ) MS 61 Type A/B MS 61 Type C/D MS 61 Type E/Ex Modernized MS 61 The MS 61 also runned during certain time on the RER B line (only on the south of Gare du Nord - the RATP part) - https://forums.dovetailgames.com/threads/rer-b-ligne-de-sceaux-paris-rapid-transit-system.16213/ The part of the A line where the MS 61 couldn't run (Nanterre-Poissy/Cergy) can be added as a part of the Transilien L line - https://forums.dovetailgames.com/threads/transilien-l-line-paris-versailles.20151/ I really hope we will soon see this iconic line in TSW!