Hi Dave,
I don't know any place in the Garmin img format that allows to store
information about traffic signs or traffic lights,
but I know that there are some bits in the (old) img format which we don't
fully understand, so maybe there is support.
I think the newer NT format have some support for this since nüvis show e.g.
speed limit signs.
Gerd
Von: mkgmap-dev im Auftrag von Dave
Swarthout
Gesendet: Donnerstag, 23. März 2017 01:24:48
An: Development list for mkgmap
Betreff: [mkgmap-dev] Directionality of stop signs
There is an ongoing discussion on the Tagging list that is trying to determine
how to tag the directionality of stop signs and yield signs as well as
traffic_signals. The arguments is that if a highway=stop is placed on a node
that is at the intersection of two ways, it applies to all vehicles crossing
that node. However, if the stop sign applies to only one of the ways at an
intersection, the highway=stop node must appear on the proper way at a slight
distance from the actual intersection. How does a routing engine determine
whether it's approaching from the "front" of the sign, in which case a stop
penalty should be calculated, or from the other direction, in which case the
sign can be ignored?
Does anybody know whether the Garmin routing algo even considers stop signs?
Dave
--
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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