Many close calls, less so once I started using active lighting day or night.
One collision, back in 1986 on a solo training ride. I T-boned a car that pulled out of a residential parking lot and went up on the hood. My privates got impaled by my stem (my man unit was pierced all the way through, fortunately off center, or it would have been WAY worse). Not pleasant. Thankfully, that was my only impact, and I hope it remains as such. I did get a nice new fork and wheelset out of the deal, though......