[mkgmap-dev] Questions about carpool handling

Fri Dec 6 19:11:49 GMT 2013

> So in the mergeroad branch the mkgmap:carpool tag will be totally independent of access=yes/no?

Yes that's the current behaviour in the mergeroad branch.
The carpool bit is set if the tag mkgmap:carpool is yes or 1 or true.
I am not sure if the carpool bit should be set or cleared to mark a road 
as carpool lane. But you can easily invert the bit by adding the 
following two lines to the end of the finalize block in your lines file:

<finalize>
...
mkgmap:carpool=yes { mkgmap:carpool=no }
mkgmap:carpool!=* { mkgmap:carpool=yes }

I would be happy if you (and anyone else) play a bit with the branch and 
report your findings.

WanMil

> This will be a big improvement because carpool avoidance will be one of the few instruments to block a road for traffic (access=no, bicycle=no etc are ignored by Garmin).
>
> Since Garmin sets this flag in the bicycle mode automatically on, I can use it in the style file to match bicycle=no with mkgmap:carpool=yes. At the moment this is not possible because it is connected with access=no and motorcar=no.
>
>
> Wanmil wrote
>> I am really talking about bits (not tags) in the compiled garmin map
>> that define the access restrictions for each vehicle type. One bit is
>> meant to define if a road has/is a carpool lane or not.
>>
>> I will commit a change to the mergeroads branch where mgkmap:carpool
>> is
>> not postprocessed, so mkgmap:carpool=yes sets the bit and
>> mkgmap:carpool=no or mkgmap:carpool not defined will clear the bit in
>> the garmin map.
>> Then anybody can test if there is any usage of the carpool bit. I
>> couldn't find any change in the routing behaviour.
>>
>> WanMil
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>> mkgmap-dev at lists.mkgmap.org.uk
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