Trouble Shooting the Automatic Routing

To work out the route between two roads or addresses, QuickMap uses a shortest route calculation. Within this calculation there is some preferential weighting given to highways so that on long routes QuickMap will stick to the highways where possible. It is important to realise that the shortest route is not always the quickest.

There are two road networks contained in QuickMap, a physical and legal road network. Both are maintained by Government. The physical road network is poorly maintained, only accurate to within 22m, has many missing roads and road segments, and the road names are not always correct. The legal road network is more accurate, and is maintained monthly. However, legal roads do not always physically exist and their names often differ from what they are commonly known. As with the physical road network there are also missing road segments. Given the nature of the road network database in New Zealand no route planning software can be seen as authoritative.

QuickMap uses the Legal Road network under the Legal Group and the various Road options under the Transport Group to carry out its shortest route calculation. However, if there is a missing road segment then QuickMap can do one of the following:

The automatic route planner does not take into account one way roads, closed roads, or roads that cannot be accessed in a car such as Malls when calculating a route.