Traffic Control Device 4 : Includes any: (a) sign, signal, or notice; or (b) traffic calming device; or (c) marking or road surface treatment used on a road for the purpose of traffic control
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}