I have also often proposed this - already long time ago. It's the most usable way. maxspeed should only make a road slower, never faster. Because it would be an illusion to drive 100km/h on a highway=track - even if it were allowed - to give an extreme example. As long as there is not tag giving average speed - which could be used to overturn the actual roadspeed - maxspeed should be like in real life, a limit only - never allowed to increase the roadspeed - Andrzejs version therefore makes perfect sense. On 12.03.2015 08:31, Gerd Petermann wrote:
Hi Andrzej,
I think that you are right, but I have not thought about this in detail.
I see that Ralf Kleineisel and Bernd are using the rules from the default style. What do you think about Andrzejs version?
Gerd
Date: Sun, 8 Mar 2015 16:43:20 +0100 From: popej@poczta.onet.pl To: mkgmap-dev@lists.mkgmap.org.uk Subject: [mkgmap-dev] roadspeed in default style
Hi,
one of threads reminded me about "roadspeed" include in default style.
As far as I understand, Garmin maps made by mkgmap contain average road speed, which can be used for calculation of arrival time.
Include "roadspeed" deals with speed limits and convert them into value, which is then treated as average speed. In my opinion this is wrong assumption. Better average speed could be estimated from road type. Speed limit should be used only to limit average speed, for example on good roads in urban area. I'm using this approach in my maps. I have attached my alternative for roadspeed.
-- Best regards, Andrzej
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