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Stephen Lance Dennee, Associated Press
An Amish buggy is parked near the Graves County Courthouse in Mayfield, Ky., Thursday, Jan. 12, 2012. A group of Amish men were sent to jail by Judge Deborah Crooks for not paying fines for not displaying slow moving vehicle signs on their buggies. Reflective tape and oil lamp powered lighting are seen on the buggy.

LOUISVILLE, Ky. — A group of Amish men is asking the Kentucky Supreme Court to allow them to sidestep a state requirement that they use orange highway signs on their horse-drawn buggies.

Some of the men have been jailed in western Kentucky for refusing to pay fines for violating the slow-moving vehicle law. The Amish men say the bright orange signs conflict with their religious beliefs to live a plain life, free of flashy colors.

William Sharp, an attorney with the Kentucky American Civil Liberties Union, filed a brief laying out arguments by the men on Thursday. The Kentucky Supreme Court has agreed to hear the case but has not set a date.

Ten Amish men were ordered to jail Thursday in Graves County, with sentences from three to 13 days.