Trains honk when stopping. And starting. And on command.
Small changes concerning balance, gameplay, or graphics.
Trains are great, but what if they could do even more?
Would it be possible to add an option for OpenTTD train sounds (according to opensfx license that is permitted)?
http://bundles.openttdcoop.org/opensfx/nightlies/LATEST/, then download the tar.gz, look under src/wav (sounds 3 to 6 I think).