On Tue, 13 Aug 2019 at 09:28, Martin Koppenhoefer <dieterdre...@gmail.com> wrote:
> > Sometimes it won’t help if this can only be one road, because for example > a primary road could dissolve into several secondary roads (or can’t it?). > Town or city on the coast with only one primary road leading to it. Secondary roads connect it to nearby villages which have no other primary or secondary road to them. Fan-out like this is possible. Better to avoid the computational complexity of figuring out which primaries are or are not terminal and just show all primaries. After all, somebody looking at the map may be trying to find a primary route linking two terminal settlements. So not only is it computationally difficult to strip out terminal primaries, it's unhelpful. Those routes are primaries for several reasons, but one of those reasons is that people wish to go to the places they connect to, even locations at the end of a primary. -- Paul
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