I've been going around Oregon and marking roads as tertiary. The TIGER import generally gave most roads highway=residential. I've been trying to mark tertiary roads as ones that have a painted centerline.
The Mapquest OSM view is nice for this since it shows tertiary roads at one higher zoom level than Mapnik. That lets me see a larger area at a time.
My usual workflow is to download an area, get Bing imagery and then mark the roads. Since it's a real pain to select a road then add two tags (highway=tertiary and lanes=2), I added a button to JOSM. To do that, I've created an XML file with the following (forgive my markup)
<presets> <item name="Mark Tiger Reviewed"> <key key="tiger:reviewed"/> </item> <item name="bridge"> <key key="bridge" value="yes"/> <key key="layer" value="1"/> </item> <item name="Make Tertiary"> <key key="highway" value="tertiary"/> <key key="lanes" value="2"/> </item> </presets>
Use the Preferences-->Map Settings to include your XML file. Then go to Preferences-->Presets and add them to the toolbar as buttons. Voila. Now if only Java didn't quit drawing ways between points randomly....