Login to SCDB.info with your access key and go to the NDrive product page. Push Download button and save the file scdb_ndrive.zip to your hard disk.
Unzip file scdb_ndrive.zip with a suitable program - we recommend WINZIP - to a target folder of your choice in your computer. You will get unzipped file scdb_ndrive.kml .
Copy unzipped file onto sd-card of NDrive into the directory "[sd-card]/Ndrive/Speedcams".
Start NDrive app and activate safety camera alerts in Menu/Settings/Safety Options.