Hi Nick,

none of these. It is related to road_speed, but have not been able to fix. :(



On June 18, 2023 08:04:29 osm <[email protected]> wrote:

In Basecamp you may have ticked Ferries under Options,Routing, Feature
type Avoidances .

Also look for {add mkgmap:ferry=1} in your styles.

I've had a similar problem with one of my styles and took out '{add
mkgmap:ferry=1}'. and as a result it worked.

r

Nick

On 05/06/2023 11:06, Vuki wrote:
Hi Nick,

that did not help.

Br,
Mihaly

On 2023. 06. 01. 8:53, osm wrote:
Hi

Not a real answer but perhaps do a quick check using another routable
type (0x16) for ferries (0x1a or 0x1b) and see what happens.


Nick

On 31/05/2023 16:59, 7770 wrote:
Hi.
I can experience the same type of issues (or at least very similar)
on my
GPSMAP 66st (handheld outdoor unit) when trying to take a ferry from
the
Scandinavian peninsula to Europe.
I have seen some of the jumps (straight lines occasionally).

Here is some theory on the issue.

Examples for such issues are Karlskrona (south of sweden) to Gdynia
(north of
Poland), or Stockholm to Helsinki. In those cases two the following can
happen.

When calculating for time, the unit may consider to drive around
instead of
taking the ferry, the ferry entrance would just be a stop along the
route but
the device would not consider taking the ferry, because it is
presumed slower
than driving many 100 kilometers extra or it simply times out saying
there is
no route possible to calculate.

If i instead select calculating for shorter distance, the ferry is
often
considered and used by the route.

Anyhow, in the style file for lines, there are two entries for ferry
lines:
route=ferry & (motorcar=no | motor_vehicle=no) [0x1b road_class=0
road_speed=0
resolution 23]
route=ferry [0x1a road_class=3 road_speed=0 resolution 19]

If the ferry routes are expected to take cars the road_class will be
3 and and
the road_speed 0, this road speed is so slow that the device will
consider to
use a faster way instead of taking the ferry.

So, what i do to make it a greater chance that a ferry will be used
when
routing for time, is that i have raised the road_speed to 1 for
those two
lines, since it would also help for passenger ferries. I was tempted
to raise
it to 2 but many ferries are too slow for road_speed 2.
This has somewhat improved routing scenarios in my case. It's not 100 %
perfect but much better than before.

I cant say it is exactly the problem that you see, but some idea.


Regards
Karl



On onsdag 31 maj 2023 15:58:00 CEST Vukovics Mihály wrote:
Hello Community,

I am struggling with an issue. I am generating Garmin map from OSM o5m
sources(geofabrik) using the built-in style.
Nor the BaseCamp or my Zümo 396LM is unable to calculate route via
ferry
lines. The behaviour is very strange, here is an example:

Route from Lille to Dover, all avoidances are disabled: unable to
calculate route, just a straigth line between the citie.
If I am forcing the route inside the service road area of Calais ferry
terminal, the route is calculated correctly.
Even funnier, that when I shape the route directly to the ferry line,
Basecamp swims me on the ferry instead of routing through the port.

This behaviour is occuring with other ferry lines (for example
Aberdeen
- Lerwick).

I have checked on openstreetmap and the roads are connected and
routable
in the style file.

Here are the example screenshots about the issue.

https://picallow.com/mkgmap-ferry-routing/?usp_success=2&post_id=116783&form

_id=27

Any ideas or fix?

Br,
Mihaly

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