[ubernostrum]

Chattanooga, TN, was ordered to refund 176 fines from a light determined to have an illegally-short yellow phase:

http://www.thenewspaper.com/news/22/2269.asp

This (large) page has a listing of quite a few towns in California where litigation overturned tickets due to illegally-short yellow:

http://www.highwayrobbery.net/redlightcamscameras.htm