My residential lot is attached to a dirt road, which my Sim and others use fine, but then the carpool and the shelter are going for the slightly closer cliffside road. The small dirt patch that acts as a driveway, in game, is also supposed to work as a road, which my Sim, again, uses fine, though I haven't seen others use it, but my lot is the only one on it. The dirt road it attaches to is further from the lot itself. This is Twinbrook. You can't see the dirt roads properly because of the fog I can't seem to get rid of. That's not a lot I added, I chose it for a +50 Beautiful Vista moodlet after all...