Hi Gerd,
This relation also has the tag junction=roundabout Therefor the MultipolygonRelation code removes the tag from the way. I am not sure if this is just wrong data or also wrong handling in mkgmap.
I can confirm, that removing relations 1999551-2 resolves problem. I don't know handling of relations in mkgmap, but it seems weird to me, that relation removes a tag from a way. This is the relation: <relation id='1999552' timestamp='2013-09-18T21:04:39Z' uid='681295' user='przemas75' visible='true' version='5' changeset='17913721'> <member type='way' ref='148247399' role='outer' /> <tag k='highway' v='primary' /> <tag k='junction' v='roundabout' /> <tag k='type' v='multipolygon' /> </relation> Does this relation define a highway area and this is the reason of removing junction tag? Please investigate second case, with bigger samples. Depending on sample size roundabouts get different Garmin objects or speed class. Roundabouts description and their relations are the same in both samples. In my opinion results shouldn't differ. -- Best regards, Andrzej