[Talk-us] Network edge cases

[Minh Nguyen]

Vào lúc 09:06 2022-01-27, Brian M. Sperlongano đã viết:
> My take on this is:
> 
> 1. If part of the road is toll, and part is not, accurately tagging the 
> toll parts as toll=yes is desirable, and we should render the toll 
> sections in a different color, as tagged.  The underlying schema 
> (OpenMapTiles) does not retrieve toll tagging from a route relation and 
> I think the current scheme of tagging toll status at the way level is an 
> acceptable and desirable approach.

Florida and Texas have special shields for their numbered toll road 
route networks, so I don't think toll information on the route relations 
is necessarily redundant to toll=yes on the ways. The distinction can 
matter greatly for turn-by-turn navigation [1], though it may not matter 
as much on a map meant for browsing around.

In Florida, the distinct toll shield has resulted in a distinct 
network=* value. [2] That should already be consumable by Americana 
without requiring any OpenMapTiles changes, compared to a separate 
toll=yes tag. However, toll=yes and modifier=Toll are being used on a 
number of route relations in Texas, mostly reflecting variations on the 
usual IH/US/SH shield. [3] We could try leaving out the special toll 
banners in Texas for now and revisit if the use of white SH shields 
instead of blue ones causes any confusion.

[1] 
https://wiki.openstreetmap.org/wiki/United_States/Road_signs/Generic_shields
[2] https://wiki.openstreetmap.org/wiki/Tag:network%3DUS:FL:Toll
[3] https://overpass-turbo.eu/s/1fvw

-- 
minh at nguyen.cincinnati.oh.us