T2B or TW02B Temporary Warning Other Hazard Road Signs, referred to as a W2-1B Sign in the TCD Rule, are used in an emergency situation to indicate a temporary hazard exists on or adjacent to the roadway. The TW-2 Other Hazard Traffic Sign is used in-conjunction with a supplementary plate describing that hazard on Level 2/3 New Zealand Roads with Temporary Traffic Management (TTM) and is in the Waka Kotahi Code of Practice (CoPTTM).