Hi Mackerski, I just spotted your edit. I had thought from expressway=* that this road met all the requirements of an expressway? Essentially that it has full access control and isn't a motorway. It's a step beyond dual carriageway (dual_carriageway=yes), due to its grade separation and lack of local exits, except for a few highway maintenance roads which are LILO.

For routing, it seems worthwhile having one or other, but expressway seems more suitable to me, or is there a different consensus on this? (I did have a hoke around the Ireland Roads wiki pages but didn't find anything.)

For another example - it's in use on the new A6 in NI: way/601375429#map=14/54.7439/-6.3959

I've reverted the change.

Hi Isaac, thanks for your edits. Unfortunately some of this is quite wrong around the Dunkettle interchange - you have reopened the roundabout and a number of roads which have long ago closed (permanently). There is recent aerial footage of what this area actually looks like now, and if you were to view on the ground you would also see the changes. You've added stretches of road which are not yet completed (see https://twitter.com/dunkettleint for current updates about the construction) and added bridges where they don't exist...

Just letting you know before I revert some of the changes you've made.

Hi MacLondon, roundabouts should be the same road designation throughout the junction - otherwise this confuses GPS routing greatly. It should be tagged with the road of highest importance that passes through it:
junction=roundabout#Selection_of_the_right_highway_tag

Hi Openallhours, just a tip - when removing ways, it's best rather than deleting them, to change their highway= tag to demolished:highway=

This is because all the imagery still shows that they "exist", so to the average editor it looks like they should be reinstated. Leaving the lines and nodes present, but marked as "demolished:", provides more information to editors and makes it clear that a mistake hasn't been made that needs resetting.

Hi WADEENG,
Can I ask whether your removal of the highway=cycleway here was in error? I had mapped the cycleway from video & photo footage, and I was under the impression that it's open - happy to be corrected though.

Ah! Fair enough then - interesting that Sabre doesn't have this ref; perhaps a redesignation occurred after the 40s. Another part of the nebulous world of B- and C-roads... Thanks for confirming 😊

Hi _Madfly, I just noticed this changeset where the Clandeboye Road was given the ref B109. Looking it up, the Sabre roads site shows that what was the B109 (de-designated in the mid 20th century) went along Rathgael Road and south east, and not towards the centre of town. I was about to remove this ref and de-designate to a tertiary road, but wanted to check in case you have other information on this to keep it?

I'm not local to the area, so it's difficult to say. I don't think it's related to an education authority, so I'd assume school isn't quite correct - feel free to update to something that seems likely.

I notice as well that the organisation details are currently on the building, while the "school" area is unnamed, so it's probably worth taking the name out of the building and putting it into the area tags.

Spot on, thanks for amending :-)

Hi, there seem to be some issues with the footpath you've added beside the Open University campus: way/1133926856
It crosses a road and a set of steps (without making clear whether they connect or go over/under each other), and it's also attached to the bridge area of the road, possibly inadvertently.

I can't see the route on aerial imagery, so can't make the adjustments myself; perhaps you can update the route with some local knowledge?

Hi,
It's all as it should be - as of writing, the most recent aerial photos are Mapbox premium and Bing and it matches both.

Hi, I didn't create this from scratch - I refined some of the existing mapping based on an approximation of construction plans, as there were sections which did not make sense (see history of way way/350073909/history for some additional history of the original mapping). I didn't make any changes to the status (i.e. under construction, proposed, etc.), as it was already mapped this way. If you have local knowledge of this and it's clear the construction has not begun, it may be best to re-tag all mapped sections as highway=proposed instead (highway=proposed)

Hey Openallhours, thanks for this edit.
Not a criticism, but a tip - when removing roads from use, rather than deleting the way, it's better to update the highway=* tag to disused:highway=* (or demolished:highway=* if you know the road has been entirely removed), rather than deleting the way. This is because aerial imagery still shows that the road exists, and leaving the line in place with this tag clarifies for other editors that the road should not be reinstated on openstreetmap. Roads with the disused: etc tags are not rendered on the openstreetmap.org mapping, or in GPS software, so it just remains as a reminder to editors in case someone comes along, sees the road in imagery and tries to add it back.

See osm.wiki/Lifecycle_prefix for more information.

After the demolished: ways have been around a while, I tend to only delete them once at least one of the aerial image sets is updated to show that the road is now gone.

Spot on, many thanks :-)

Hi Openallhours,

I see you've changed this section back to motorway link - I had changed it to trunk, because drivers going from N40 (or anywhere on the Dunkettle roundabout at the moment) would not be travelling under any motorway conditions, so this should not be designated a motorway slipway after Link A joins (from N40 roundabout towards N25), otherwise GPS software for users that avoid motorways would not be directed along this route.

Hi Yasslay, sory for my late response. I'm happy to go with consensus on this one then - is there a talk page or record of this somewhere?

Yes, it appears to be disconnected from the tertiary road according to the drive-by video source, but it's unclear. I inserted a "fixme" tag in the adjacent demolished highway.

Sorry for the delay - thanks for your response, that's helpful. Am I right in thinking then that the "loose ends" between exit and legal start of motorway would essentially be trunk road with reference A2, or would they be as present: trunk road labelled with ref M3? (and vice versa on the westbound)

I'm assuming the start/end of the motorway restrictions and distinction should also marry up with the start/end of the named motorway reference.

Hi Falsernet,
With this edit changing the limits of motorway designation - is there a standard approach in use here? I'm interested to know, as I would have a different interpretation of what's on the ground. The eastern edit (westbound carriageway) does in fact have motorway signage before the point you edited (on a gantry at https://goo.gl/maps/3QzP4Nu1PmVUK4AA7), so while the edit is based on the "M3" signage seen just after the junction on the left, this stretch of road already does have motorway signage (at least to my eyes).

Additionally while the road classification has been changed to trunk, the reference number is still set as M3, meaning something of a disparity between road designation and reference.

I suppose I'm also thinking in terms of how GPS navigation would interpret this: as a driver travelling west, I would expect to be told as I pass the exit, "go straight on to join the motorway" (or M3, etc) whereas with the current format, this distinction won't be made until after passing the junction.

Would love to hear your thoughts.