And if that doesn't work, then you might try using an RGB discriminator map to allow you to retain the tiled(?) asphalt and selectively blend in stripes, etc. in discreet areas and with higher resolution (if needed) for the stripes.  This worked for my updated TinkerBell's Drive-In Cafe', which has a large lot and surrounding streets.  I can dig out that build scene and make a mat room screenshot.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5