Whilst I appreciate I may well be running the risk of being perceived as supporting the principle of 'cash cows'......
(And I don't!)
If people drove safely, and within (whatever) the car ownership and driving rules in force at the time, there would be far fewer requirements for speed cameras, traffic police or tailgating cameras.
That my supposition stands no likelihood of reality, then I'm all for whatever equipment is required to improve the risk of people completing their journeys safely.