There are a couple of POI groups that you can download that work on nearly any GPS. I download mine from:
http://www.poifriend.com/poigroup.php?poigroup_id=7532
I use a Garmin GPS, and it is pretty easy.
1. Download the POI group from the site above
2. Download and install "POI loader". It is free from Garmin. I'm sure that Tom Tom and the others have something similar to get custom POIs onto your device.
3. Plug your GPS into the computer and run POI loader.
I have mine set so that there's a proximity alarm when you get with 600 metres of one of these cameras. Disadvantage is that it will chime regardless of the direction the camera is facing. Advantage is it'll raise your awareness of the intersection and you'll check your speed regardless.
There's also one for Calgary locations only (as opposed to all of Canada), but I don't see the harm in having it beep at me when I'm in Edmonton either.
And while you're on that POI Friend site, there are loads of other groups so you can, for example, download all the Tim Horton's locations, etc. Very handy when you're in a place you don't know very well and you need your fix. And you can actually suggest changes to the POIs as well, so if you find a camera/store/etc. that isn't listed, you can add it.