Hi,
I have downloaded and saved the Garmin Cyclops™ Safety Cameras file into the POI folder and set the proximity alerts but when I passed red-light, I would not get any sound alert. This file was about 115KB
A mate bought a Nuvi last week and I asked him for the camera.poi file, which was about 800KB and I saved as POI.gpi and now I get alerts with sound.
Don't know if Garmin Cyclops™ Safety Cameras file works or not but this is how I got my speed camera POI file to work.