Yes. Road conditions, visibility conditions, surroundings, road design, etc all come into play. I've yet to see a speed camera on a residential street. They are

Yes. Road conditions, visibility conditions, surroundings, road design, etc all come into play. I've yet to see a speed camera on a residential street. They are usually on highways. I would bet there would be out cry from the people who live on the street (most likely they don't or no longer have younger children) that want to go 30 to get to their homes.