Check out the New Zealand Land Transport Safety Authority website for details on the New Zealand Road Code, as well as cycle safety and other general motoring information.

Traffic Safety and Road Conditions
All traffic travels on the left in New Zealand, and many roads are only two lanes. Drivers should exercise extra caution if accustomed to driving on the right. Cars turning left must yield to oncoming cars turning in the same direction. This is especially important to remember on two-lane roads. Proceed carefully through intersections and be wary of drivers who may run yellow and red lights. Drivers should use caution to avoid animals when driving in rural areas. Pedestrians are advised to look carefully in all directions before crossing a street or roadway, and to use crosswalks. Traffic always yields to the right and pedestrians do not have the right of way except at crosswalks.

International Driving Licences and Permits
You can legally drive in New Zealand for up to 12 months if you have either a current driver's licence from your home country or an International Driving Permit (IDP).
Recent law changes mean all drivers, including visitors from other countries, must carry their licence or permit at all times when driving. You will only be able to drive the same types of vehicles you are licensed to drive in your home country. The common legal age to rent a car in New Zealand is 25 years.
Make sure your driver's licence is current. If your licence is not in English, you should bring an English translation with you, or obtain an IDP. Contact your local automobile club for further details about obtaining a translation or an IDP