The cameras are a regressive tax on poor people? That would be the tickets. You can correct this by having ticket penalties scale in proportion with wealth or income, which is something you probably want to do anyways so that they still act as a deterrent for people who are otherwise rich enough to flaunt traffic laws.

As for causing more accidents through slamming brakes on the yellow, I simply don't believe that. But if it helps you can extend the yellow duration by an extra half second.