[Talk-us] Network edge cases

[Zeke Farwell]

>
> if toll roads aren't going to use their own color
>

We would like to give toll road lines their own color as that is a very
common treatment on American paper highway maps.  There has been discussion
around how to do this on Slack recently.  Simply changing the color for
road with toll=yes seems simple enough, but this is complicated by the fact
that quite a few toll roads have segments where the toll can be avoided and
mappers have been (correctly) putting toll=no on these, or omitting the
tag.  A common variant of this is toll=yes going one direction and toll=no
going the other.  So there isn't a current tagging practice that specifies
"this whole road is considered a toll road, despite short untolled
segments".  Putting toll=yes on a route relation can probably address this
in a lot of cases, but perhaps in others it may not make sense for the
entirety of a route to be rendered in a toll road color.



On Thu, Jan 27, 2022 at 11:26 AM Paul Johnson <baloo at ursamundi.org> wrote:

> On Thu, Jan 27, 2022 at 4:15 AM Minh Nguyen <minh at nguyen.cincinnati.oh.us>
> wrote:
>
>> Vào lúc 19:41 2022-01-26, Paul Johnson đã viết:
>> > Some difficult edge cases I foresee will be in the US:TX:* network
>> > space, since they have a /ton/ of secondary networks.  The Ranch and
>> > Farm to Market networks are also a fairly unreal mess, since Texas
>> signs
>> > the two interchangeably even though in reality, all the ranch to market
>> > routes are in the farm to market network (except for the one lone
>> member
>> > of the ranch road system that passes in front of LBJ's ranch).  Not
>> sure
>> > how much of a practical difference this will make for Americana, but
>> > definitely a tripping point.
>>
>> Fortunately, the various statewide networks in Texas have distinct
>> network=* values, even the one-off numbered networks US:TX:Beltway,
>> US:TX:NASA, US:TX:PA, and US:TX:RM (the one in front of LBJ's ranch).
>>
>
> Minor nitpick...US:TX:RM really should have just one member with the rest
> in US:TX:FM, Texas is just weird on how they sign that network.
>
>
>> (State Highway OSR is tagged network=US:TX ref=OSR, which I think is
>> fine because it's supposed to be just like an ordinary state highway,
>> just with an alphabetic route number.)
>>
>> The hard part will be designing legible shields for Texas, especially
>> the FM/RM shield that leaves hardly any room for a sometimes four-digit
>> route number. Based on the maps I've seen from Texas-based publishers,
>> the guide sign-style markers (simple rectangle with a legend above) work
>> better than any attempt at reproducing the reassurance markers,
>> especially the new Business FM shield.
>>
>
> The freeway trailblazers might be useful in this case, since they're white
> horizontal rectangles.
>
>
>> The Texas toll roads pose another set of challenges. Should we bother
>> reproducing the special IH/US/SH TOLL shields if all toll roads will be
>> drawn in a different line color like green anyways? If so, how important
>> is it to preserve the Texas flag (TxTag) or NTTA logo at such a small
>> size? It would be straightforward to just nix the road name from Harris
>> County's toll road shields, but should it feature an acronym of the road
>> name instead of the double arrow, for wayfinding purposes? Needless to
>> say, if anyone has graphic design skills, we're waiting for you.
>>
>
> Honestly just using the yellow TOLL banner from the MUTCD is probably an
> easier goal that communicates the message clearly if toll roads aren't
> going to use their own color.
>
>
>> > And US:MO:Branson (or is it US:MO:Taney:Branson?) will have colors
>> > instead of ref if those city-level routes are mapped...these color
>> coded
>> > routes have examples in the MUTCD, so this might not be unique to
>> Branson.
>>
>> Ah, another city route system. (I'll be sure to add the Fremont, Ohio,
>> city route shields once I've gotten through the litany of that state's
>> county and township shields.) The color belt routes around Pittsburgh
>> are already supported, so I don't think Branson's color routes will be a
>> problem once they're in relations.
>>
>
> I feel like we should nail down the hierarchy a bit... it's
> US:ST:County:City, right?  If not, that makes more sense than just
> US:ST:Locale just to cover the edge case potential for two towns with the
> same name in the same state (rare, but not unheard of) or a county with the
> same name as a city within it that both have their own networks.
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