they don't do anything proactively - it's always a reaction.they have the usual "make a good show" social  programs that don't accomplish anything.  they show up to crime scenes but don't really patrol.  if they actually enforced traffic laws people may bother to learn them and then follow them. i see cops parked in clear view by schools, and yet one block over little 4 banger hondas and toyotas are screaming up the block with all  it's raging 109 horsepower (i don't know how much.. my little honda is that). surely the cops can hear it - they know it ...there are peel out marks all over - leading to the cars that do these...that's how much these racers know the cops are going to do squat.  
between having their own little world in their patrol cars and doing paperwork, they seem to not want to get out of the car.  it irritates me that it's my tax money covering their jobs and equipment, and i have so little say in it and they are so arrogant.