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Hi all,<br>
we had some discussions on the weirdness of Garmin's routing
algorithm in the past.<br>
<br>
In August 2014, I described an example, and popej could give a good
explanation:<br>
<a class="moz-txt-link-freetext" href="https://www.mkgmap.org.uk/pipermail/mkgmap-dev/2014q3/thread.html#21825">https://www.mkgmap.org.uk/pipermail/mkgmap-dev/2014q3/thread.html#21825</a><br>
<br>
Beyond that, "newer" Garmin outdoor devices (ehm, my Oregon is from
2013) have "activity routing" which causes odd artifacts even when
you think that you do not use it: it may send a car to a cycleway
parallel to a primary road. or a bicycle onto a motorway. Hence the
trick by ligfietser to use non-routable lines for non-cyclable ways
is important. Perhaps you can find the messages some where on the
forum <a class="moz-txt-link-freetext" href="https://forum.openstreetmap.org/">https://forum.openstreetmap.org/</a><br>
<br>
Regards,<br>
Bernhard<br>
<br>
<div class="moz-cite-prefix">Am 07.06.2022 um 16:16 schrieb lig
fietser:<br>
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Harri,<br>
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Thats why I use on my Openfietsmap not routable lines for
highways with bicycle=no.</div>
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I misuse the avoidance of toll roads to force the routing to
take cycle routes only.</div>
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In my scripts I retag all highways that are not part of a cycle
route relation with toll=yes,</div>
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and all cycle routes with toll=no</div>
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I also "upgrade" cycleways and lower classified roads, but this
comes indeed with a penalty of</div>
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slow or even impossible route calculations.<br>
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<br>
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