[Talk-us] United States Roadway Classification Guidelines

[McGuire, Matthew]

> There's no observation that will tell you whether a road is primary or
> secondary.

Agreed. There is no observation that will tell you whether a road is more important than another road that is not where you are. But you can identify physical characteristics. A lot of these observations will lead to a coherent whole.

> Tagging railway=rail for a pair of rails rather than mapping each rail
> separately and using rail=steel is tagging for the renderer. It's also
> tagging correctly, as would be the rail=steel method.

On the ground, I can see a pair of railroad tracks. I can't see a regional network of roads.

> What you mean is that it can transcend usefulness and become a sea of
> unclassified roads. Gotcha.

Your usefulness <> my usefulness. Therefore, I'm advocating objectivity vs subjectivity.