The tech might make it possible but doing so is unconstitutional since an automatic deduction of fine presumes guilt, rather than innocence. 

Is it even something we want to do?  Complete dominance of cars over everything else and in particular pedestrians  is the last thing we should be encouraging and recent planning trends are challenging car-dominance. People WANT to live in pedestrian friendly, vibrant neighbourhoods, and ceding that back to high speed, unimpeded automotive traffic is, frankly, a stu pid idea.