[mkgmap-dev] [PATCH v2] grok unpavedness + ferry nature

Tue Dec 8 16:03:13 GMT 2009

On 08.12.2009 16:59, Nakor wrote:
> Well I have never seen such a setting where you can exclude roads by 
> type from routing. 0x01-0x13 is routable, and then with limitation 
> 0x1a and 0x1b so how the fuck are you excluding a road type?
>
>
> On my eTrex Vista I have the option to avoid highways. I was just 
> wondering how this gets determined by the GPS. To make things clear I 
> have attached a screen capture of the routing options.
Ah now I see what you mean. That setting is a big mistery of what it 
does depending on each unit and map.

One would need to run many tests and setup a table to document what 
(type, road_class, road_speed) in which combination has what effect. 
Also it does not work over long distances on Garmin maps.
Twould be nice know how it really works, so you can go and have a try 
contructing testmaps and then report back.

That particular setting is the one that never interested me due to its 
reported problems.