T220 or TW02.10 Temporary Warning Signals Not Working Road Signs, referred to as a W2-1.10 Sign in the TCD Rule, is a supplementary plate, used at intersections where current traffic lights are not in operation or out of order. The TW-2.10 Signals Not Working Traffic Sign is used underneath a T2 TW-2 Other Hazard Sign and available for Level One or Level 2/3 New Zealand Roads for Temporary Traffic Management (TTM) and is in the Waka Kotahi Code of Practice (CoPTTM).