Seattle thought about doing that but reactionaries framed it as defunding the police department so they elected a more conservative council who moved it back.
Seattle went from like 40k/yr moving violation tickets to 3k/yr over the last decade-ish.
I think GP might have been talking about the proposal to split parking enforcement out of the police department: https://mynorthwest.com/3093949/seattle-council-votes-move-p...
Which yes, was undone: https://www.theurbanist.org/2022/11/23/council-returns-parki...
But also only tangentially related to speeding enforcement.
Couldn't one hit back by increasing funding for the resulting police and traffic enforcement departments?