I just read where a number of states in America have outlawed the use of speed and red light cameras.
“The constitutionality of automated enforcement laws has been challenged in many jurisdictions,” the National Conference of State Legislatures notes.
In those states that do permit them, they don't send a fine or photo a couple of weeks later, they immediately notify police patrols in the area so the police can apprehend the perpetrators and get them to correct their ways immediately.
The American who posted about it is holidaying in Australia, and could not believe we use cameras to detect people not wearing seatbelts or texting. These things are not fined in the States.