I found this great site that deals with GPS and custom POI's.
They provide great GPS info along with free POI's summited
by users. If you register and help people out for few weeks
they will let you download a POI of Red light cam locations for free.
you may also pay for this file but I perfer helping others out.
I may make a donation since they are such nice people on here.
Here is the link post and let me know what you guys think.