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oscar_voss
Joined: 27 Jul 2008
Posts: 622
Location: Arlington VA
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 Posted: Wed Oct 22, 2014 7:05 pm Post subject: |
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| yakra wrote: | I'd put the new waypoint 1 midway between the ramp gores on the eastbound/southbound side of the highway, which to my eyes (comparing Google vs Bing satellite imagery in the HB) is just about exactly where an *OldNB2 point would otherwise go, for the new alignment peeling away from the old.
I'll probably just use OSM to make my edits, but am still curious to see what you have for GPS coords. |
My GPS coordinates (translated into OSM format) are:
http://www.openstreetmap.org/?lat=47.48374&lon=-68.47871
This looks to be off quite a bit, so I'd just go with
http://www.openstreetmap.org/?lat=47.481220&lon=-68.472891
which is about where you were going to put the *OldNB2 point anyway. |
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oscar_voss
Joined: 27 Jul 2008
Posts: 622
Location: Arlington VA
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| Posted: Thu Oct 30, 2014 12:06 am Post subject: |
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| yakra wrote: | | oscar_voss wrote: | | I suspect any realignments there were just short curve straightenings and other minor alignment changes, which we can probably ignore, so that leaves us with just one major realignment. |
Unsure if you're including the St.-Louis-du-Ha! Ha! to Temiscouata-sur-le-Lac segment, which bypassed Chemin du Golf, including the QC232_N waypoint. Google satellite shows how it looked before the new alignment was built. |
Picking through my GPS reads, I agree there was a significant realignment north of QC232_N (exit 40), with Ch. du Golf the old route. The northern end of the realignment is no further north than this GPS read (which is well south of the next exit, 47):
http://www.openstreetmap.org/?lat=47.675010&lon=-68.959240
I suspect the actual peel-away point is south of there, just from my eyeball glance at the maps, but I'm not sure there's an open-source way to refine what I got from my GPS receiver at the point where my car's nav system flagged an alignment change.
Satellite imagery and my GPS reads also confirm that the new A-85 alignment southeast of Degelis peels away from the old TCH alignment very close to the QC 295 overpass at exit 14, with the old alignment following what is now Av. de la Madawaska, a closed road, and maybe part of Av. de l'Accueil between QC 295 and Rue Industrielle.
BTW, I just posted over at the aaroads.com forum a lot of photos and other notes on the new A-85 segments. That probably covers everything I haven't already mentioned here, but I might follow up on more points in response to discussion here or at aaroads. |
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yakra
Joined: 30 Jul 2008
Posts: 2600
Location: Area Code 207
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| Posted: Thu Oct 30, 2014 1:00 am Post subject: |
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I have the August 2014 and October 2010 revisions of the Quebec shapefiles. If the one has the new alignment and the other has the old, then I can GISplunge some segments from the old & new TCH and get some pretty precise peel-away coords as needed.
Remind me again later though. I'm lazy and about to go to sleep and don't want to go too deeply into it ATM. |
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yakra
Joined: 30 Jul 2008
Posts: 2600
Location: Area Code 207
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| Posted: Wed Aug 19, 2015 12:17 am Post subject: |
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| NB TCH2 is now in the TravelMapping DB / HB. Thanks, Oscar! |
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oscar_voss
Joined: 27 Jul 2008
Posts: 622
Location: Arlington VA
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| Posted: Wed Aug 19, 2015 3:11 am Post subject: |
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All the changes on the Quebec side are in the Travel Mapping DB, as well.
<locking> |
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