Many improvements with "pre-rendered" (baked) lighting and lighting effects have been added to the game. This is done so that they blend perfectly with the rest of the original map as if it were created by Rockstar. The changes are extensive, and ...
In GTA 3, GTA 4 and GTA 5 there is an adequate implementation of everything that is on the roads in real prototypes of the cities used, namely cracks, patches/potholes on the roads, dashed lines on 4-lane roads, etc. But this is not in SA, and if so...