Echo effect when a horn is activated

[dis0nored]

When I hear trains even in the station, one notable feature is the echo produced by the horn blast. It's heard for about half kilometer. Nice echoing.  However If you were to activate the horn in a tunnel, a very dramatic increase would be present as the sound hits the concrete and has nowhere to go except bounce back, so use it wisely.

[Deadlost]

I think the soundscape are missing bits. The running sounds don't change in tunnels or under/over bridges, would be a nice addition as well. In addition to horns in constrained places 🙂

Here is an example of changing horn when exiting a tunnel:
 

Running sounds change inside tunnel:  (subtle change since this is not "clickity-clack rails 😄 "