Originally Posted by Leinster

Cops don't come to the scene of a traffic accident unless there's a major injury or major property damage, and I don't think this incident in the OP qualifies. By all means exchange phone numbers, and in this case there were witnesses so get some details for them, but if the worst result was a slightly out of true front wheel, then other than getting the driver to pay for the LBS to fix it, I don't see what else could be done.