Once you get off the motorway and start driving on the more rural roads, there are many one lane bridges. In the South Island there is one that you share with a train and you have to make sure no train is coming before you drive over it. Here you just have to make sure no car is coming. This sign tells you that you have to yield (give way) to someone coming from the other direction.
This view is very typical of the North Island. The photo was taken on the road just above the turnoff into Matakana, about an hour north of Auckland. Note the older home to the left. It is small and probably 70 years old. Here, they call them "character" homes. A lot of 5 acres or more is a "lifestyle block". This is probably a farm with even more acreage than that. New Zealand uses the metric system so land is measured in hectares and smaller "sections" are measured in square metres. Note the tank to the right of the house. Large homes might have 2 or 3 tanks. It is called a storm water system, and is actually the source of water for the home. Farms often have bores (wells) but most homes get enough water just from catching what drains from the roof when it rains. See the pipe going from the gutter to the tank? The water is usually drinkable without treatment. New Zealanders don't have very good teeth, and part of the reason is that there is no fluoride in rainwater.