It is relatively easy to edit any region asset to set the default texture to the standard grid or to any PBR texture you prefer. This preserves all the other settings that you may need in the region such as the road traffic characteristics. You need to add, at a minimum, two lines to its config.txt file.
PHP:
default-texture <kuid:-25:1180>
trainz-build 4.8
The above example uses the <kuid> for the standard TRS19 grid pattern, but any PBR texture can be used.
The
default-texture tag is only valid in assets of Trainz build
4.8 and above so the
trainz-build tag must also be added.
A condition of region assets is that if the
trainz-build is
3.4 and higher then additional tags become compulsory. Specifically:-
- water-color
- defaultjunction
- longitude
- latitude
- altitude
Details can be found on the Trainz Wiki at
https://online.ts2009.com/mediaWiki/index.php/How_to_Create_a_Region_Asset
I have also edited and uploaded the standard Auran created region assets to use the standard TRS19 Grid while preserving all the other features.
They can be found on the DLS as:-
<kuid:45176:100490> Australia with TRS19 Grid
<kuid:45176:100362> United Kingdom with TRS19 Grid
<kuid:45176:100481> France with TRS19 Grid
<kuid:45176:100437> United States with TRS19 Grid
<kuid:45176:100488> Germany with TRS19 Grid
<kuid:45176:100499> Switzerland with TRS19 Grid