In the US speed cameras are viewed as revenue generating devices, instead of devices meant to protect the public safety. So most places have laws against them because the voters see it as “you just want to charge me for speeding” instead of “people breaking the speed limit are unsafe and need to be stopped”. So instead speeding is mostly enforced by actual police on the road (or pulled slightly off the road) using radar guns. The idea being if you were speeding enough to make a policeman bother to turn the siren on, track you down, and issue the ticket, you must have been doing something pretty unsafe.
In the US speed cameras are viewed as revenue generating devices, instead of devices meant to protect the public safety. So most places have laws against them because the voters see it as “you just want to charge me for speeding” instead of “people breaking the speed limit are unsafe and need to be stopped”. So instead speeding is mostly enforced by actual police on the road (or pulled slightly off the road) using radar guns. The idea being if you were speeding enough to make a policeman bother to turn the siren on, track you down, and issue the ticket, you must have been doing something pretty unsafe.