Knows how to locate an air leak in and patch a bike inner tube. Learned after walking 10 miles home through Silicon Valley after spare tube burst crossing the Dumbarton Bridge.
So I know you're supposed to carry a patch kit with you when you go on bike rides. But since I've never had much success finding leaks, I always carried a spare tube with me instead. This method doesn't work very well when you lose two tubes on one ride. Yes.
Also, I have two things to say that nobody cares about. First, I know why most places in the valley don't allow left on green, but all these places should allow left on green and eliminate left-turn arrows during low-traffic periods (for example, all the commercial parks in northern San José and Santa Clara on weekends). Also turn off the traffic lights at the parking lot entrances on weekends. If we can deal with lanes that change directions we can deal with that, and it would make my bike rides more pleasant. There is little enough traffic that the people pulling out of the lots would be better off fending for themselves. Second, it would be really really awesome if when they swept debris off the roads they would sweep it all the way to the curb instead of leaving it all in the middle of the bike lanes.