Not a bad idea. I used to run a street sweeper and there is nothing worst than not being able to do what you are paid to do because morons who park on the streets during designated sweeping hours.
Why stop with street sweepers??? Why not garbage trucks, city construction crews, school crossing guards, high school janitors ......the "California Gestapo " will find you!!!
Do you think they should have ticket quotas like a real police officer???