Something like this:

https://www-cdn.rac.com.au/-/media/images/rac-website/articles/content-hub/2019/state/state_traffic_calming_speed_hump.jpg?modified=20190423052233

In my recent case it was at the bottom of a hill so I hit it hard. These things seem to be everywhere now. Had I been going slow even if I went down I would have gotten back up and rode away. I've done it before. But this time a quick bodily inventory told me, "You ain't just getting up and riding away from this one!" Three strapping young men had to lift me onto the gurney and load me into the ambulance.