Urban.

I'm with the doc--traffic is slower, and I blend right in with the flow. Divers are used to seeing cyclists too, so they have more experience around us.

As for grade, what grade? Seventy-five feet of climbing on my 4.5 mile route home tonight. And part of that was carrying the bike up to my third-floor apartment.

I have a favored route that's about twice the minimum and goes up and down all the hills along the southern border of the city. In the three seasons I try to hit that at least twice a week in each direction.