Traveling in New Zeeland requires some understanding and accommodation for drivers of campervans(from the US).
Other drivers must recognize;

• a single wiper swipe indicates a right turn
• multiple swipes designates a left turn.

If you have not had the pleasure of driving a vehicle where the driver sits on the right hand side, the turn signals and the wiper controls are also reversed on the steering column. This has been the most often confused/abused activity regarding driving to date.

It still takes some concentration to recognize that you need to slow down for a turn that is marked 75 since the speed limit is usually 100 kph(60 MPH).