[kyllo]

Cycling on roads is extremely dangerous. Every single person I know who commutes by bicycle has been hit by a car at least once. One of my colleagues was killed cycling to work when he was hit by a semi truck. Another woman was recently killed by a box truck cycling to work a block from my office.

[ethanhunt_]

I thought this too, but after looking at data it doesn't really seem any more dangerous than driving a car. I think the reason it sounds dangerous is that when it happens everyone hears about it and talks about it a lot more than car accidents.

Mrmoneymustache did an analysis and if you define 'safety' as 'expected life span', cycling is actually safer than driving a car.