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admin
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 Posted: Wed Sep 22, 2010 9:02 pm Post subject: British/Irish motorway clean-up |
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Si, I'm bad with email but good with keeping up in the Forum, so I'll move our discussion here to proceed faster. (My email inbox tends to be largely the "to-do list" since it gets flooded with file submissions.)
> England A14M Huntingdon:Deleted Route
> England A195M Washington:Deleted Route
> England A635M Manchester:Deleted Route
> England A666M Farnsworth:Deleted Route
These should vanish alright.
> England M3:Extended south to A27
> England M4 Heathrow Spur:Added route
> England M5:Swapped waypoint labels 18 and 18a, to reflect signage
> England M6:Truncated route to junction 45
> England M49:Truncated to M5
> England M61:Rerouted off unsigned A666(M) and onto M61 'mainline' to the A580
> England M275:Extended north to A27
> England A64M Leeds:Extended east to Marsh Lane
> Ireland M4:Extended east to junction 5
> Ireland M8:Extended south to N25
> Ireland M11:Extended north to N11
I still need to look at those.
ENG M1 J46: Since it's "one point per interchange," these double half-diamonds tend to defy our rule of thumb. In practice, keep them as one interchange unless:
1. Each half diamond involves a different route that we cover or will cover.
2. The two half diamonds are clearly 0.5 mi/0.8 km or more apart.
So in this case we'd leave it as one point.
WLS M4 J38: 39 was indeed missing.
| Code: | IRL M7 J20 doesn't exist and it might never exist. I've found no sign of M8 J2, have you?
My road atlas of Ireland has them, and both appear in this map from the national roads authority http://www.nra.ie/RoadSchemeActivity/LaoisCountyCouncil/N7CastletowntoNenagh/Map,16480,en.pdf
Perhaps they should be starred. IIRC it was a last minute change of plan to not build them. I guess they can be starred or something (IRE M6 J18 should be as well, and I'm not sure it's in the right place). |
Not starred - starred waypoints are for junctions that ceased to be after we had worked out the route. For example, if the interchange was there and then closed, then we star it instead of deleting it.
For non-existent, planned, or not-yet-opened interchanges, we simply skip the point until the interchange exists and is open. That's why these two interchanges were "missing" intentionally.
IRE M6 J18: According to
http://www.boards.ie/vbulletin/showthread.php?p=63925988
J18 wasn't built after all, so it should be deleted or else hidden as a shaping point. |
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si404
Joined: 07 Oct 2009
Posts: 708
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| Posted: Thu Sep 23, 2010 6:28 am Post subject: |
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Well opening M6 J18 would be silly, given the road(s) it'll intersect with haven't been built. This was the one junction I felt justified in doing the 2 never-built, but planned junctions on the M7 and M8.
For M1 J46, the northern waypoint is useful for shaping., but I guess we can return the waypoint somewhere in the middle of the junction (perhaps where the original slips that were closed join).
I get onto those and send you updated files. |
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si404
Joined: 07 Oct 2009
Posts: 708
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| Posted: Thu Sep 23, 2010 1:11 pm Post subject: Re: British/Irish motorway clean-up |
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To save you some effort.
| admin wrote: | | > England M3:Extended south to A27 |
GMSV shows the route to the A27 (and A33, which might be a better name for the waypoint), as the main 'A' and 'B' carriageways
| Quote: | | > England M6:Truncated route to junction 45 |
As shown by the ENG A74(M) route.
| Quote: | > England M5:Swapped waypoint labels 18 and 18a, to reflect signage
> England M49:Truncated to M5 |
Linked in with the M5 changes - removing what would be a false concurrency. While the slips mesh J18 and J18a together, the original J18 is for the A4, and junction 18a is for the M49. M49 ends on what are basically M5 'collector-distributor carriageways' Marker posts (hard to see on GMSV) have them as M5 slip roads.
| Quote: | | > England M61:Rerouted off unsigned A666(M) and onto M61 'mainline' to the A580 |
A and B Carriageways.
| Quote: | | > England M275:Extended north to A27 |
Is signed as part of M275 and the M27. Likewise the M27 east of the M275 is signed as both. Originally this spur off the M27 was to have been M274, and with the change of junction layout plans, it became part of the M275. The reasons why the other motorway is signed in both locations is the short length between the start of motorway and the slip roads for the M27 or M275.
| Quote: | > England A64M Leeds:Extended east to Marsh Lane
> Ireland M8:Extended south to N25 |
Both of these are one-way - the motorway starts/ends earlier heading one way, and you went with those, rather than the longer ones. | Quote: | | > Ireland M4:Extended east to junction 5 |
A quick look at OSM will show you that this is motorway.
| Quote: | | > Ireland M11:Extended north to N11 |
Normally shown on atlases as a separate junction. More than 0.8 km from the M50 junction (which came later). |
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admin
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| Posted: Sun Sep 26, 2010 11:50 pm Post subject: |
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ENG M3: Looks like it ends at the A27 interchange just north of the A33 roundabout. I'd call this a relocation though, not an extension.
ENG M6: It already ends at J45.
ENG M5 & M49: Agreed.
ENG M61: Agreed.
ENG M275: Agreed.
ENG A64(M): Agreed.
IRL M8: I'm guessing that
http://www.transport.ie/upload/general/10978-0908_2ND_TRANCHE_N8_LEAFLET-8.PDF
made me think it stopped short of N25, and not thinking about driving on the left made me think 19 must be the single-ramp interchange and that maybe the N25 interchange would be 20 later. But that makes no sense, 19 must be the N25 interchange and the single-on-ramp interchange must be unnumbered.
IRL M4: Agreed.
IRL M11: Agreed, but the cross road for the endpoint label is DubRd rather than N11 according to OSM. |
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si404
Joined: 07 Oct 2009
Posts: 708
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| Posted: Mon Sep 27, 2010 8:04 am Post subject: |
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| I've just sent you all the files I've changed with the changes you've suggested. With the M8 in Ireland, I've given the N25 interchange the 19 waypoint label, and the on-slip WooLn as the cross street seems to be called Wood Lane. |
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si404
Joined: 07 Oct 2009
Posts: 708
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| Posted: Tue Sep 28, 2010 1:56 pm Post subject: |
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| M7 Nenagh to be merged into M7 Limerick, with the opening of the linking section today. I'll update the route file and the .csv and .xls files and sent them in tonight. |
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admin
Site Admin
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| Posted: Tue Sep 28, 2010 10:23 pm Post subject: |
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One more change:
ENG M4Hea: Change the City field to Heathrow Airport. |
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si404
Joined: 07 Oct 2009
Posts: 708
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| Posted: Wed Sep 29, 2010 6:32 am Post subject: |
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| Done |
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