More evidence that red light cameras are all about the money

The State of Illinois tried to hide all of its enforcement data in an encrypted/locked Excel file so that those freedom-loving people who requested the data under a Freedom of Information Act request would get useless data.  Why don't they want the liberty-minded to see the data?  Could it be that the data proves that red light cameras make intersections less safe?  Isn't that really the only logical concluision? Here is the story.