Cze´sć Andrzej,
thanks for this (bad) information. Looks like the Oregon 600 (an outdoor
device) uses the newer algorithm.
Well, it means, I can now stop optimizing for the "correct" route, and
perhaps rather try to "optimize" the calculated time for the selected
route (i.e. get it closer to my driving times)...
Am 16.08.2014 14:46, schrieb Andrzej Popowski:
Hi Bernhard,
Garmin has 2 version of routing algorithm, older and newer. Older is
used by Mapsource, older nuvi, probably by outdoor devices. Newer
algorithm is used by BaseCamp and last 2-3 generations of nuvi.
Newer algorithm is designed for speed of calculation rather than
quality of results. Finding fastest way is based on road classes. At
longer distances device uses only class 4 roads ignoring shortcuts
with lower class. That's why you can optimize route manually.
Older algorithm is more precise, it can use lower class roads, when
class 4 roads are missing. Calculations are longer. But probably you
still can find better route manually.
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