Most stations already have posters telling you: - which cars are normally less crowded - which cars are recommended for getting off at a certain station, base

Most stations already have posters telling you: - which cars are normally less crowded - which cars are recommended for getting off at a certain station, based on proximity of the exits at that station to each car Google Maps (as well as other apps) also show similar information when asking for transit directions (for the former it only gives you the average on the whole train, not by car)