Road workers Speed Limit Ahead supplementary

T144 or TW01B3 Temporary Warning Road Works - Speed Limit Ahead Road Signs, referred to as a W1-4 Sign in the TCD Rule, is a supplementary plate, used to give advance warning of road works subject to a temporary speed limit restriction. The sign indicates the temporary speed limit applied to the work site. The TW-1B3 Speed Limit Ahead Traffic Sign is used underneath a T1 TW-1 Road Works 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).