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<div class="moz-cite-prefix">On 2016-09-14 05:52, Marc Gemis wrote:<br>
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cite="mid:CAJKJX-TuON7JZs9L7=7-c0OeOrqd=ruLxpXNfTcmgm4_dh8A0A@mail.gmail.com"
type="cite">
<pre wrap="">André, Julien,
thanks for the replies. I've forwarded them to Michael and let hem
answer your questions/remarks/concerns.
My impression, based on aerial imagery, was that only a couple of
streets might be classified incorrectly, But it hard to tell without
knowing the area.
As for the circles in Overpass, they are caused by very small (OSM)
ways. There is a command that you can add to the css of Overpass to
avoid them, but I leave it to Michael to solve.
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Unfortunately, trying to route based on administrative
classification is a lost cause.<br>
If we were tweaking it to match usability, someone would soon come
to destroy the work.<br>
<a
href="https://graphhopper.com/maps/?point=50.53614%2C5.632821&point=50.546776%2C5.591397&locale=en&vehicle=car&weighting=fastest&elevation=false&use_miles=false&layer=Omniscale">My
best example is this</a>. National road N674 !!!<br>
It's a winding narrow road where two lorries can hardly cross each
other.<br>
It's bordering a ravine on a great length.<br>
One day, a lorry crumbled the side, fortunately only down a few
meters to the meadow below.<br>
And I once skilfully dodged a van driving much too fast in the sharp
bend.<br>
No danger sign at all !!! <br>
<br>
I once suggested that objective classification criteria were mapped
to be used for routing.<br>
One which is important and easily mappable from aerial photos is the
width.<br>
Straightness can be calculated by the GPS based on topology.<br>
Recommended speed is unhappily more subjective unless we find an
objective measure.<br>
Surface quality too.<br>
I suggested that bouncing could be measured by software using a GSM
accelerometer.<br>
<br>
In a town, there is a mesh of major roads that cars follow to travel
inside, not across.<br>
I mentioned boulevards d'Avroy and de la Sauvenière.<br>
Julien mentioned them around place du Marché.<br>
Around the Guillemins, they are avenue E.Digneffe, rue de Fragnée,
rue de Sclessin, rue des Guillemins, rue du Plan Incliné, rue
d'Artois & Fabry & Louvrex, etc.<br>
All those streets could get routing specific tags that no one would
disturb.<br>
<br>
Cheers
<br>
<br>
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<td>André.</td>
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