[mkgmap-dev] Warning about flare road in multi-lane roundabout

Sat May 18 06:49:34 BST 2013

Hi all,

mkgmap is complaining about this roundabout entry/exit lane (way id 
221616945):

2013/05/18 08:39:30 WARNING (RouteNode): 63240005.osm.pbf: Incoming 
roundabout flare road (4;9;13;23 Vaajakoskentie, 
http://www.openstreetmap.org/browse/way/221616945) points in wrong 
direction?  
http://www.openstreetmap.org/?mlat=62.24637&mlon=25.87235&zoom=17
2013/05/18 08:39:30 WARNING (RouteNode): 63240005.osm.pbf: Outgoing 
roundabout flare road (4;9;13;23 Vaajakoskentie, 
http://www.openstreetmap.org/browse/way/221616945) points in wrong 
direction?  
http://www.openstreetmap.org/?mlat=62.24639&mlon=25.87304&zoom=17

Can someone check if it results in a sane routing graph? Is there 
anything that could be done in the source data to make the warning go 
away? (I can of course filter out this particular warning message, but I 
am looking for a more general solution.)

I would guess that we will start to see similar error messages when the 
mapping detail increases, for multi-lane roundabouts connected to 
highway=primary, trunk, or motorway_link, when there are lanes specific 
to certain roundabout exits.

BTW, in Finland, some mappers have already started to map traffic signs, 
and mapping individual trees and lamp posts is already the norm in some 
cities.

Best regards,

	Marko