First - wow! It’s quite un-intuitive to add a traffic camera to OSM… osm.wiki/Relation:enforcement

Second - wow^2! No one seems to render the traffic enforcements. They’re not shown on the default OSM rendering, and OSMand+ for Android phones (a navigation app that should show them) also does not include them.

This site scrapes the database every couple weeks and renders the enforcements. Enjoy! http://frink.bplaced.de/blitzer/

Below is a shell script using graphicsmagick (can be easily adapted to imagemagick by simply removing gm from the two image-generation lines below) for stitching together downloaded tile sets into one large PNG. It is tested on MacOS 10.8.5 with graphicsmagick installed via homebrew and should work on most Linux distros. This script is adapted from a script posted by HannesHH.

The script can be useful when producing large printed maps at a zoom level unavailable from most online services. I use JTileDownloader to grab tiles. Be sure to obey the terms of use of your tile server (or bake your own).

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