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Joining multi-state state routes
Highway63:
State highways keep the "View Associated Routes" option though they typically don't have any. But where a highway keeps the same number across state lines, could they have their own page, or is that too difficult since multiple states would have that number?
For example, IA-MO-AR 5, IL-IA-NE-WY 92, or ID-MT-ND-MN 200.
Places where the route is a continuation but doesn't keep the number (e.g. IA 175-NE 91) would be a different case.
sipes23:
There are more than a couple of these lurking in New England as well. I'm pretty sure Maine and New Hampshire (and maybe Vermont) have a highway 9 that links. There are probably others.
rickmastfan67:
We also have SC/GA/FL 121.
Jim:
The complication here is that to date, all "connected routes" are part of a single system, like usai, usaus, or eure. There is currently no good mechanism within the system to specify that a road in usany is connected to one in usama, for example, because no _con.csv file spans those two systems. I'm thinking that to do so without code and DB changes would require a new system (usamsr?) which has copies of all the pieces of multi-state routes. I'm sure there are better solutions, though, that do have code/DB changes, but that would support this in a cleaner way. If this is generally seen as a useful enhancement, a discussion here of how it might work and a GitHub issue in the DataProcessing repository to make sure it stays on the radar would be good.
bejacob:
--- Quote from: Jim on July 31, 2018, 07:40:41 am ---The complication here is that to date, all "connected routes" are part of a single system, like usai, usaus, or eure. There is currently no good mechanism within the system to specify that a road in usany is connected to one in usama, for example, because no _con.csv file spans those two systems. I'm thinking that to do so without code and DB changes would require a new system (usamsr?) which has copies of all the pieces of multi-state routes.
--- End quote ---
These are not really multi-state routes. The fact the the route has the same number on each side of the state line is convenient, but the reality is that once you cross the state line, you're on a new route. I've been on numerous roads that continue across a state line where the numbers change. I don't see these as any different as routes with the number stays the same on either side of the border.
Not sure everyone will agree, but I don't see any need to change the way TM treats these routes.
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