<Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (September 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (September 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> Speed limits in New Zealand are in kilometres per hour and range up to and including 110 km / h . New Zealand speed limits were in miles per hour (mph) until 1975, when the country metricated its road signage . </P> <P> Significant changes were made to the rules for setting speed limits in 2003 and 2011, including provision for 40 km / h limits . However, it was then necessary to introduce the Land Transport (Speed Limits Validation) Bill in 2015 to confirm the legitimacy of the previous changes . Another significant change in August 2017 introduced a provision for 110 km / h limits on some motorways and expressways . </P>

When did new zealand change from miles to kilometres