Disable rail types other than modded local railway?

[Superjoeyman]

Hi, I'm trying to make a scenario about small 2ft gauge railroading, is there any way to disable all standard gauge/electric/monorail/maglev track, without getting a replacement grf? If possible, also something to tweak up the price of road, air, and sea travel would be nice. Many thanks, everyone.

[kamnet]

Nope, you'll need newgrfs. A base cost mod will take care of the latter, I'm not aware of any 2 ft gauge train sets though. You've got a few regional NG sets and the 600mm set.

[Eddi]

you cannot disable the builtin railtypes, but NewGRFs can change their properties (look, costs, compatible vehicles, etc.)

also, a NewGRF can disable the default vehicles (and introduce new ones), and all railtypes which have no vehicles available will stay hidden.

[Superjoeyman]

Sorry, when I said 2ft it was interchangeably with 600mm, which was the set I was thinking of, considering they're basically the same guage. I understand I need newgrfs, but are there any that just remove, or remove + add with a really late intro date? Again, thanks everyone.

[Eddi]

you can make a NewGRF which disables the default trains, it's basically just one line (besides all the general NewGRF setup)

[Kevo00]

Just make the 600mm gauge set the only train newgrf available in the scenario and you should not get standard gauge rail as there will be no trains to run on it.

[Gwyd]

A quick grf that allows you to disable features (vehicles, houses, cargoes, industries and airports) that are either in the base set or in grfs above this grf in the list. This can crash the game if you don't load grfs after it. Please don't complain about that. Also attached are the strings. If you could translate those, then I'd happily add the translations into the grf, so it can be more easily used.
Also added the source code. Sorry about any inconsistencies. GPL v2.