Yeah, that's the one where the lady almost went over the bridge! That's also where I saw the person with a bloody nose and a couple of bike tangled up on the side of the path. The one where I got nailed was the Mt Vernon trail. Up near the airport, right across from Crystal City, the path crosses this old, now un-used, automobile access ramp to the airport, and it makes a fairly sharp turn while coming down a moderately steep hill. The other biker didn't make the turn.

I planning to pick up an ADC map of Northern Virginia and then get back on the roads a bit more. I still like the trails, they're a great idea, but I like the predictability of riding on the roads, too.