Is there any texture set that eliminates the painted-on (image-based) roads?

I've never like the approach of seeing areas of random roads just running all over the place. I assume there are add-ons that will add "actual" roads back in (a la x-plane) but those painted roads... ouch.

Black Marble Base (default amount of roads in sim) and Black Marble Vector (all the roads in the world) sounds like it may be what you're after.

http://blackmarble.chrisbelldesigns.com/

It doesn't just add the night lighting - the roads are there in the daytime too.

Thanks... ok, I checked it out. I can't tell if it replaces the tiles that contain generic roads. Any idea?

I have never seen scenery in FSX or P3D (other than photo scenery) that does not have roads running across texture tiles, with no regard for what is on those tiles...

I have played around with this, and I was able to get rid of dirt roads that just seemed to run everywhere and nowhere. Also used it to manipulate highways. It was a while ago though, some results were good, some not so good  

It's certainly trial and error, take with a grain of salt, this worked for me, but may have negative effects on your setup. I found this searching the web many moons ago. 

Make SURE you backup your files, it you like to tinker, it's kinda neat.

Insert "No" in the exclude autogen and render to texture for the entry in the terrain.cfg you want to disable.

// Roads - dirt / 8 lanes / undivided median
[Texture.159]
Name=Roads_Dirt_8_Lanes_Undivided_Median
Color=FFC00000
guid={FF701B43-61C9-4B00-AADB-B18726208C0D}
LegacyId=1177
Textures=dirtroadsu.bmp,dirtroadhw.bmp,dirtroadsu.bmp,dirtroadsu.bmp,dirtroadsu.bmp,dirtroadsu_lm.bmp
Layout=7_PLUS_4
StripWidthMeters=25
Size=2
FlattenMode=flat
FlattenPriority=21000
LandClassRemapType=none
ExcludeAutogen=No 
RenderToTexture=No
RenderPriority=100500
Water=No

JD