MapForums

When determining (programmatically and manual) the route between two points (one point is positioned at a highway/motorway) the calculated result of the route isn't ok.
The route will be going straight across the map toward a local road instead to the highway exit.
Moving the point at the highway a little the route is calculated correctly.

Is it possible to get the correct route in one step?

This is a problem that may not have a solution.

It always occurs when trying to route to or from a road of GeoRoadType geoRoadInterstate. These are described in the documentation as limited-access highways.

I suppose this is essentially correct behaviour since you cannot actually join a motorway, or the US equivalent, except at junctions.

However there doesn't seem to be any way to determine a roads GeoRoadType in advance and so program accordingly.

If anyone knows of a solution I would be very interested.

Roger

An interesting fact is when you move the stop located at the highway, after the route has been calculated (with a wrong result); Mappoint automatically recalculated the route and gives back the correct result.

I’m looking how I can achieve this situation in my own code.

Yes, I also discovered that and tried moving the waypoint in code.

Problem was that although it was easy enough to move the waypoint a small amount and back again it did not produce the required effect.

I could only acheive the required result by moving the waypoint with the mouse!

If you have any success let me know.

Roger