I would have to go with urban; urban has the sheer volume of other vehicles and people on the road, plus tighter situations (going down a one way street with cars parked on both sides comes to mind right at the start), then throw in bicycle riders, and of course distracted drivers and you've got your hands full of situations that rural drivers don't have to deal with on a daily basis.So it would seem that we will need to develop some new driving strategies or skills to deal with road hazards in a three wheeled world. Not sure which of us will be impacted the most. Those of us in rural areas or those in more urban areas.