In the present menu you can select a journey from the top level "To the trains menu"as shown below. In the next step you need to select the route you like to play. If you go to choose a route, you cannot select a journey afterwards, though all other ways of playing can be selected: I think it makes sense to be able to select a journey at this level as well (so after selection a route to play). In this case, the game should not ask again to select a route.
It seems to be “Journey” has been significantly downplayed for this version of TSW, by burying it away in this manner.
Journeys are the main way I play the game. It would be nice if they added working dynamic weather (I believe this is disabled despite what it says on the menu).