[PATCH v1] Re: [mkgmap-dev] maxspeed tag vs road_speed preset

Thu May 21 11:09:50 BST 2009

Hi, and thaks for your answer.

I'm not a developer so I really have some problem in applying the patch locally...

I just would like to keep control over the map generation. For example: in Italy the maxspeed out of the city is 90km/h. It applies to unclassified roads up to trunk roads (well, some trunks has 110 km/h).

I would like to code in the map in a way that a tertiary with 90km/h speed limit gets road_speed 3 (i.e 60 km effective speed), while a trunk with the same 90km/h limit gets road_speed 5 (i.e 90 km/h effective speed). You can immagine for the secondary and primary.

I looked at the source and you coded: if maxspeed>40 then road_speed=3

It means that in the Italian cities (limit=50) the average speed coded in the map is 60km/h. It looks strange to me and carries to very "optimistic" city ETA calculations (and maybe not optimal route selection).

Moreover, I sow other map makers (DE:All_in_one_Garmin_Map) making maps including the maxspeed tag management in their styles (but maybe they use a patched mkgmap).

So, if it counts I do vote for the switch --ignore-maxspeed and I vote to integrate the
patch in the mainstream mkgmap (again, I'm not able to compile the code).

As you may have understood, I'm using Windo.....%$&"/$£/$=)"(/$)"&)%$()"%

Sorry, my PC crashed while I was writing Windo.....=)/(/£%&(/&"/(&$"/=)"30/()/&89

Ciao, Marco.

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