On 18/03/14 08:07, Gerd Petermann wrote:
@Steve: Could it be that the 05 60 00 type restrictions have two via points?
I know we discussed this before and at the time I hadn't examined any. But now I am fairly certain that all intermediate points are via points. Its not a strange situation, perhaps more of an optimisation rather than anything that there would be a traffic sign for. Imagine there are two two roads between A and D; ABCD and AD. You can travel AB and ABC, but there is a turn restriction from C to D. So the 'real' turn restriction is BCD, but they write it as ABCD, perhaps just so that the algorithm doesn't waste time exploring the wrong path if it is at A and needing to get to D. I've no idea how well that relates to what the OSM tags mean. ..Steve