RD6L or RG17 Regulatory General Keep Left Road Signs, referred to as a R3-13 Sign in the TCD Rule, are used to indicate that drivers must pass to the left of an obstruction or that the traffic lane is shifting to the left in a work zone or during road works. Signs are double punched for use as a RG-34 Keep Right Sign. The RG-17 Traffic Sign can be used on Level One New Zealand Roads for Temporary Traffic Management (TTM) and is in the Waka Kotahi Code of Practice (CoPTTM).