It lifts up over time (after all, painter's tape isn't meant to be permanent), so it would make for a very nasty looking roadway. If you get any air bubbles in it, it would also have an odd texture to it. (bumps that are too large to be scale)
Why not try black duct tape? At the club, we use plaster for pavement, then we paint it black. For parking lots, we simply used some of the leftover black fascia board and painted lines in it.