road diet
 n.— «DeKalb County says it will convert a section of North Decatur Road from four car lanes to three car and two bicycle lanes, the first “road diet” project of its kind in the metro area.» —“Bicycling Advocate Dennis Hoffarth Leads The Campaign To Make Atlanta More Bike-Friendly” by Dan Hulbert Atlanta Journal and Constitution (Ga.) May 19, 2000. (source: Double-Tongued Dictionary)