Few days ago I discovered something nice, you may not notice at all during driving. For teh WSR route the semaphore signals have sounds when the change state. You need to be quite close and turn up speaker volume sufficiently, but I use to free camera, move very close to the semaphore and then just wait for the train from the other direction to pass. So it can be quite rare to have opportunities to hear them, but it's a nice detail.
