Will a delay on the green light help

I think that a delay in the green light would be a good thing. I was talking to a man who runs a driving school and we got to talking. We where talking about photo enforcement cameras a the amber time of the lights the cameras are set to.

I think if the amber time is to low it causes people to have more accidents and makes more people go through the light for a money. He told me that before they had amber lights the

light would go from green to red no amber. So he says people who are careful don't have to worry. I think that before amber the green must have been delayed so that the intersection could clear.

And if not they should delay the green at photo enforcement intersections wher the amber is low for the sake of money.

What do you think?