What would you do if you came across a bike crash?

Midtown Manhattan crash involving bicyclist, hit by the driver of a van. As I walked home from work last night, I saw a crowd gathered at the corner of 17th and L Streets, NW. On closer inspection, a woman was lying in the road. A bicyclist had been hit. Have you thought about what you would do in such a situation?

A few people were hunched over, talking to her, trying to keep her still and calm. The rest of the crowd watched, concerned but unsure of what to do. Since I'd learned about the bystander effect, which renders people immobile rather than helpful in a crowd, I'd mentally rehearsed how to deal with a crash.

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