[Talk-us] US Trunk road tagging

[MoiraPrime]

There's going to be exceptions and those can be handled as they happen, otherwise if you try to cover every exception you'll never get anything done.

The only real rule I think there should be is that roads should remain whatever they're classified as until they meet a route of greater or equal importance. Everything else here is just something to help people decide on classification if they're fixing a large network and unsure what each road should be.


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\-------- Original Message --------
On May 5, 2021, 4:48 PM, MoiraPrime via Talk-us < talk-us at openstreetmap.org> wrote:
I moreso just mean isolated sections of interstates. There are interstates that are incomplete and full of isolated sections....US highways that are being upgraded. These are fine. What's not really fine are these users obsessed with making every cloverleaf without cross traffic a motorway. That was the main reason I brought it up.

Also for trunks be aware, this is meant for the bigger picture (state wide long distance connections, very large cities are obviously going to have their own way of doing things).


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\-------- Original Message --------
On May 5, 2021, 4:37 PM, Minh Nguyen < minh at nguyen.cincinnati.oh.us> wrote:

Vào lúc 12:22 2021-05-05, MoiraPrime via Talk-us đã viết:
> I personally think we should do the following
>
> 1. Trunks should connect to other Trunks or a Motorway on both ends if possible. No Isolated islands.
>
> 2. Motorways should be longer than 1 mile, be an incomplete under-construction interstate, or be connected to another motorway. Random short island sections of interstate existing solely because someone thinks an interchange meets motorway quality should not exist (which is a repeated topic in the OSM US Slack).
How would you define "incomplete, under-construction Interstate". Would
this include situations where some segments of expressway have been
upgraded to Interstate standards but other segments are still planned
and unfunded? Or is it necessary that every segment of the highway is
either fully upgraded or decorated by orange barrels? Off the top of my
head, a bunch of projects in Texas would hinge on this question, such as
I-69W/C/E and U.S. 175.
The Wilmington bypass I brought up in \[1\] might be a counterexample to
this proposal as well, depending how strongly you feel about avoiding
motorway islands.
> 3. Trunks should be important roads that fill in gaps in the Interstate system between two large cities. This can be 4 lane US highways, but it can also be 2 lane US highways, 4 lane state highways, you get the idea. The main idea is that the road is filling an important gap in the interstate system.
What about urban expressways? They fill local gaps but not between large
cities. Sometimes they aren't even county roads. (Often they're symptoms
of old shortsighted urban planning decisions, but that's a topic for
another day...) At least NHS generally classifies them as Other
Principal Arterials.
> Open to thoughts on this. It was on my mind all last night while I was dozing off to sleep.
I think all of us were dreaming we could solve road classification last
night. ;-)
\[1\] https://lists.openstreetmap.org/pipermail/talk-us/2021-May/021044.html
\--
minh at nguyen.cincinnati.oh.us
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