RG04 or RS1 Regulatory Temporary Speed Signs with 30km, referred to as a R1-1 Sign in the TCD Rule, are used to indicate a temporary speed limit (tsl) in a work site area with traffic management, or during road works, to give protection to works on the roadway or in the immediate vicinity and should be accompanied with a TG1 Temporary TW Supplementary Sign. The RG-4 Traffic Sign can be used on Level 1 New Zealand Roads for Temporary Traffic Management (TTM) and is in the Waka Kotahi Code of Practice (CoPTTM).