checked in the program "waycheck" into SVN. Link:
You can see the first improvements in OSM data (Germany) here (Statistics):
http://wiki.openstreetmap.org/index.php/AutobahnCheckC1 It's a lot of work
and probably something for the coming long winter evenings :-)
Last but not least I made the page multi lingual.
Link to WayCheck: http://wiki.openstreetmap.org/index.php/WayCheck
There are three people working on the German data already and a lady (from Italy?) computed the first Italian list.