Here is a file that you can upload to your GPS to give you a proximity alert for the Redlight/Speed Cameras in Calgary AB.
I hope this file saves you a ticket or two as no Calgaryian should be spending their hard earned money on BS automated tickets.
If you're looking for a standalone device that will properly warn you of speed cameras and speed traps all over North America, check out a super slick device called NAVALERT.
http://www.navalert.com/store/pages.php?pageid=19
I have no association with NAVALERT, I just think everybody should have one.