use the road material naming procedure
EG: Road???? if you don't you will sink into the oblivion.all material naming must follow the TDF files procedure calls.
also depends on the fuction of your road, is it bumpy,old,or dirty?
road
rged : dusty beams
roada,roadb,rdaxroa (
rdax,rdta: road with bumps, 2ns one is a very bump road level 2.
rdcp: road with cement patches
terrain:
gras (normal grass), grxs (rough grass).dstg (dusty grass)
traps
sand/gravel : grvl(gravel) ,gtrp (gravel trap harder to get out off)
rumble strips
rmbl,
walls:
twal (tirewalls),cem,wall,cmwl (cement walls), grdr (guard rails).safer (safety walls)
if that the question your asking about.