I wonder if a tiny bit of ambient added to the striping would counteract the AO shadow (only if IDL is engaged)?  A shameless hack, but if it works...

     I think this RGB map is 512x512, but  the Lothlorien RGB map was 1024.  Can't remember offhand.  For your streets, a crosswalk would be just a little rectangle on the RGB map, but that rectangle tells the nodework to overlay a (higher res) stripe map in that location.  Imagine a 512-pixel stripe map being overlaid onto the asphalt wherever a tiny red rectangle appeared in the RGB map.  So, even in closeups, you retain good detail.

     For the asphalt itself, I use two similar but distinct asymmetrical tiles, with a "scrambler" map to randomize which texture map is used in a given area, blending transtions between the tiles.  Also, the tiles are set to repeat at slightly offset scales so that theirpatterns are not synched.  This enables you to cover a vast area with just two 512-pixel texture maps, while avoiding that obvious "checkerboard" pattern common to tile repetition.

two tiles with a "scrambler", but with the tiles different enough that you can see how they are distributed in the final output:

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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