die Antwort findest du auf der hier:

http://users.skynet.be/florisjan/ttd/ttrs.html#pd

Zitat:Parameters
1st 0 - Use the new building types only, default TTD buildings are disabled
1 (default) New house types are added without modifying the old types, so towns will have both original TTD and new buildings.
2nd 0 (default) time sequence is followed.
1 - Force the 1920-1950 era. This means that the graphics for this era are used no matter what year it actually is in the game.
2 - Force the 1950-1980 era.
3 - Force the 1980-2010 era.
4 - Force the 2010-forever era.
5 - Mix all eras. This means buildings from all eras can appear no matter what year it is in the game.
3rd 0 - Don't use TTRS-v3 roads and bridges.
1 - Use TTRS-v3 roads and default TTD road bridges.
2 (default) Use TTRS-v3 roads and road bridge graphics.
4th 0 (default for TTDpatch) Use TTRS-v3 airports and heliports.
1 (default for openTTD) do not use TTRS-v3 airports and heliports.
If you don't set these parameters in your newgrf[w].cfg file, the default settings will be used.

ich denke der dritte Parameter (3rd) ist das, was du setzen solltest .

Gruß AnD