Undercover to Outside portal.
Script update for TRS19 and above.
Asset to be placed on track where train goes under other assets, eg station canopy or building. Asset will turn off weather for train in focus and change camera views. (Treat it like an boundary for use in covered areas where you don't want it to rain!). Rotate for correct orientation to undercover/outside world.
Note - Since TRS19 and above, trains in tunnels under normal terrain do not need weather to be turned off as the terrain is now waterproof! If you are using a true tunnel track, (with 'istunnel' set to 1), camera change is also automatic. Using this asset in those situations is not recommended.