Seems to me, if you were attaching a magnetic cache to the sign itself you aren’t doing any of these things. Just one woman’s opinion... From: Owen Curtis Sent: Monday, April 21, 2014 7:27 PM To: geocaching@xxxxxxxxxxxxx Subject: [GeoStL] FYI - Not On A Kirkwood Sign FYI Many traffic signs in Kirkwood now have a sticker that reads: Warning It is unlawful to remove, alter, or deface this traffic control device. City of Kirkwood Sign Shop. Taking the most conservative interpretation, I won't be placing a cache on a sign in Kirkwood until I learn more about this law. Does anyone know more about this? Has anyone had a LEO encounter re: a geocache and a traffic sign? Happy caching!