murugan,

If you have a Garmin that gets Speed Cam via Garmin Express they come in this format style (006-D2072-00.gpi) along with the unlock key of the same name.

You can download the GPI files from here or other sites and you can give it what ever name you like.

There is no difference to the GPI files you have in question. (US+Canada Safety Camera.GPI and USCanadaCyclopsSample.GPI.)