At those speeds bikes are incredibly stable. The only way a pebble of pavement imperfection will harm you is if the bicycle fails mechanically (e.g. a wheel fol

At those speeds bikes are incredibly stable. The only way a pebble of pavement imperfection will harm you is if the bicycle fails mechanically (e.g. a wheel folding in on itself). I'm pretty sure that the risk of being hit by or hitting a vehicle is multiple orders of magnitudes higher. Which isn't exactly better, but let's at least worry about the correct sources of danger.