That's mostly because of the culture of respect and patience amongst all modes in Holland. In Holland people queue politely on their single speed heavy bikes at

That's mostly because of the culture of respect and patience amongst all modes in Holland. In Holland people queue politely on their single speed heavy bikes at stoplights while in San Francisco we've had multiple injuries this year on Market St from bike-on-bike collisions caused by people from the back of the "pack" timing out red lights and passing stopped riders at high speeds.