If you want to curb speeding, the solution looks much the same: Pay reporters some portion of the fines collected from the speeder. You will very quickly see a cottage industry of Internet connected dashcams and on-board AI solutions spring up, because it's practically free money if you drive safely yourself for long enough. Pretty soon nobody will be speeding, simply because you never know who or what is watching.
This is a set of economic-legal policies I've been writing about here and there for a long time. It's great stuff.