We have red light cameras at intersections that are high traffic and known for lots of red light runners. I don't believe the faces are visible- they want the plate number. Don't think they are very effective here.
It will make you aware of wether or not who is driving your car is driving responsibly. If you know it wasn't you- I would assume you would know who drove your car, you could then make them pay the ticket, your car- your responsibility.