SVG base map of the Auckland Region. Map projection Mercator; approximate scale is 1:900,000. Orange and yellow roads are motorways/expressways, orange roads are state highways and brown roads are all other roads.
Own work, based on the following data sources:

Roads - Sourced from LINZ Data Service under the CC-BY 3.0 New Zealand licence and OpenStreetMap
Boundaries - Sourced from Statistics NZ under the CC-BY 3.0 New Zealand licence
Shaundd