Broadly speaking, yes, such continuity should apply. Maybe not using exactly the same rule as the US DOT.
In practice there is an overfocus on observing how a given stretch of road is built and an underfocus on the role it plays in the network. My pet example is this stretch of US 2 & 41: http://www.openstreetmap.org/#map=16/45.9090/-86.9901 Several times it has been upgraded to trunk, to reflect that it is dual carriageway. But it doesn't make any sense for a trunk road to run the short distance between a tiny village and a small town. Lately I've been leaning towards classifying most of US 2 as trunk, as it is the major east-west corridor in the region. But the difference between primary and trunk should be for the longer stretch of road, not just to distinguish that one stretch is overbuilt. Another example I see in the data is short cul-de-sacs tagged as tertiary, sometimes alone and sometimes as the continuation across an intersection of a longer road. The sensible classification for these is frequently unclassified, because they serve as the public access road for a small commercial or industrial area. Max _______________________________________________ Talk-us mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-us
