[Talk-us] US Trunk road tagging

[Mark Wagner]

On Wed, 5 May 2021 15:03:25 -0700
Evin Fairchild <evindfair at gmail.com> wrote:

> On Wed, May 5, 2021, 1:41 PM Minh Nguyen
> <minh at nguyen.cincinnati.oh.us> wrote:
> 
> > For sure, this would be more reasonable than tagging the whole NHS
> > as trunk. How different would it be from basing trunk on Other
> > Principal Arterials instead? That would simplify the decision tree
> > further and make it more reliable. We already have a hard enough
> > time maintaining state route relations as state routes get
> > realigned and redesignated. For all of the difficulties this
> > community had dealing with NE2, that was one thing they did quite
> > reliably that has been hard to keep up over the years.
> >  
> 
> Your idea of using the Other Principal Arterial functional class seems
> appealing. Do you know if there is a map showing all the functional
> classes for the entire US like there is with NHS routes? All I've
> been able to find when I googled it was just maps for individual
> states. It would be nice if we could all take a look at it to
> complete it with NHS.
> 

A quick comparison for Washington shows virtually no difference beyond
a scattering of city streets.  The only exception is that WA-164
between Auburn and Enumclaw is an "Other Principal Arterial" but not an
NHS route.

-- 
Mark