MA: MA 27, MA 28, and MA 123 in Brockton

[froggie]

Drove through Brockton last week, noticing signage, and double-checked MassDOT's 2018 Road Inventory GIS files to verify.  MA 27 is no longer concurrent with MA 28, as we show in TM.  Instead, it continues east of MA 28 along Court St, then turns south on Commercial St, briefly splitting into a one-way pair at the south end of Commercial St as School St and Crescent St are one-way.

MA 123 is more problematic as it splits into a multi-street/multi-block one-way pair, with eastbound (but not westbound) concurrent with MA 27.  From the Belmont St/Warren Ave intersection, eastbound MA 123 continues east on Belmont St, briefly north on Main St, then east on Crescent St before turning north again on Commercial St back to its routing east of Brockton along Centre St.  Westbound MA 123 continues west of both MA 27 and MA 28 along Centre St onto American Legion Parkway (the extra-wide part of "Centre St" west of Main), then south along Warren Ave to Belmont.

For the route lists, MA 28 is pretty simple.  Just relabel the MA 27 points (keeping the existing ones hidden as they're in use), and leave the MA 123 point as-is:

CreSt +MA27_S http://www.openstreetmap.org/?lat=42.081258&lon=-71.017299
MA123 http://www.openstreetmap.org/?lat=42.084056&lon=-71.017245
MA27 +MA27_N http://www.openstreetmap.org/?lat=42.085744&lon=-71.017288

MA 27 would require relocation off of MA 28 based on the above.  Here's what I'd suggest:

MA14_W http://www.openstreetmap.org/?lat=42.080433&lon=-70.981035
ComSt https://www.openstreetmap.org/?lat=42.08123&lon=-71.01542
MA123 https://www.openstreetmap.org/?lat=42.08403&lon=-71.01554
MA28 +MA28_N http://www.openstreetmap.org/?lat=42.085744&lon=-71.017288

This will break some lists which use the existing MA28_S point, but IMO this is unavoidable since MA 27 clearly does not duplex with MA 28 anymore.

MA 123 is messy, no matter how you cut it.  In the interest of simplicity, I'd just add a point on the southwest side of downtown where the one-way split begins, and add a point at the "new" MA 27:

MA24 http://www.openstreetmap.org/?lat=42.061907&lon=-71.061673
WarAve https://www.openstreetmap.org/?lat=42.08010&lon=-71.02269
MA28 +MA27/28 http://www.openstreetmap.org/?lat=42.084056&lon=-71.017245
MA27 https://www.openstreetmap.org/?lat=42.08403&lon=-71.01554
QuiSt http://www.openstreetmap.org/?lat=42.086842&lon=-70.987730

[yakra]

For the route lists, MA 28 is pretty simple.  Just relabel the MA 27 points (keeping the existing ones hidden as they're in use), and leave the MA 123 point as-is:

CreSt +MA27_S http://www.openstreetmap.org/?lat=42.081258&lon=-71.017299
MA123 http://www.openstreetmap.org/?lat=42.084056&lon=-71.017245
MA27 +MA27_N http://www.openstreetmap.org/?lat=42.085744&lon=-71.017288

Done.

MA 27 would require relocation off of MA 28 based on the above.  Here's what I'd suggest:

MA14_W http://www.openstreetmap.org/?lat=42.080433&lon=-70.981035
ComSt https://www.openstreetmap.org/?lat=42.08123&lon=-71.01542
MA123 https://www.openstreetmap.org/?lat=42.08403&lon=-71.01554
MA28 +MA28_N http://www.openstreetmap.org/?lat=42.085744&lon=-71.017288

This will break some lists which use the existing MA28_S point, but IMO this is unavoidable since MA 27 clearly does not duplex with MA 28 anymore.

New point added as PerSt rather than ComSt.
MA28_S deleted. All .list files using this label have the other label at or north of MA28_N, so another AltLabel has been added there.
MA123 moved.
CouSt_E added.
MA28_N -> MA28 +MA28_N +MA28_S

MA 123 is messy, no matter how you cut it.  In the interest of simplicity, I'd just add a point on the southwest side of downtown where the one-way split begins, and add a point at the "new" MA 27:

MA24 http://www.openstreetmap.org/?lat=42.061907&lon=-71.061673
WarAve https://www.openstreetmap.org/?lat=42.08010&lon=-71.02269
MA28 +MA27/28 http://www.openstreetmap.org/?lat=42.084056&lon=-71.017245
MA27 https://www.openstreetmap.org/?lat=42.08403&lon=-71.01554
QuiSt http://www.openstreetmap.org/?lat=42.086842&lon=-70.987730

Done.
On second thought... splitting the difference of the couplet at MA28:
MA28 +MA27/28 http://www.openstreetmap.org/?lat=42.082661&lon=-71.017220

https://github.com/TravelMapping/HighwayData/pull/3563

[IMGoph]

Could we get a review of Massachusetts Route 123 through downtown Brockton? Between Warren Avenue and the MA27 point (which is at Commercial and Centre), the route splits into a set of one-way pairs, but it isn't clear which streets the route follows. OSM, Apple, Google all show different information.

[neroute2]

Signage shows the following:
eastbound Belmont-Main-Crescent-Commercial-Centre
westbound Centre-Warren-Belmont

As you can see, there's a large median, and the MA28 point is halfway between the eastbound and westbound intersections. WarAve and MA27 are the two ends of the split. Looks like about as good as you can do with this.

HOWEVER, MA 28 has an issue. The MA123 point should be MA123_W, and CreSt should be MA123_E.

[yakra]

Topics merged. MA123 et al were reviewed in January 2020. Changes were made accordingly.
As neroute2 notes, it's "about as good as you can do with" the oddball couplet setup.

WRT points on MA28, we do not and have never separately labeled points for different directions of a couplet.
(Except possibly for some super-rare extenuating cases with some really whack geometry.)
What I will do here is collapse CreSt & MA123 into one point mid-couplet and create a graph connection.
https://github.com/TravelMapping/HighwayData/pull/5926