Hi @Fizzie41 Would you be able to link to the Talk-au thread(s) by any chance? I followed your above link & eventually found OpenStreetMap (OSM) notes of Australia which shows a summary, but super exciting to see the huge change in the graphs!

I think you’re right on the traffic lights, ages ago it was expected that navigation software (or at least the converter from OSM to the navigation format needed) would take care of that, but I see the traffic light tag page has been updated with recommendations of adding lights to where the cars stop. So I have fixed that at the intersection. I see what what you mean about the SE slip lane, I’ve added traffic lights because you can see in Bing that they have a seperate slip lane but it has lights. Also updated the other slip lanes to be giveways. AFAIK, it’s a core principle of OSM to map what’s on the ground, not for the renderer or navigation routing software. My take on this over the last 4-5 years is that means on-off ramps shouldn’t have names unless there’s a sign (like in the US, but also on the M1 in Melbourne). I think it’s expected the the OSM to Nav processor/converter will do something smart about on-off ramps so they don’t become unnamed road. Maybe file a bug on what ever is doing the conversion? It could automatically generate a message along the lines of eg. “take the exit to Nicholson Road”. Also, looking at the Bing sat images, it definitely looks like there are bike lanes along Nicholson Rd, so I added those tags. Feel free to have another look over the intersection to see if I stuffed up anything…

Hi Helifella, I’ve cleaned it up a bit more, just a few tweaks, nice job by the way (traffic lights make sense to me - matches the satellite view). Nicholson Rd northbound from the south was a motorway_link for some reason, fixed. There was one on/off ramp slip lane missing, I added & cleaned up the others. Also on/off ramps don’t have names or references unless that particular section of road is named (I think only the US names ramps).

Also looks like Nicholson Rd has bike lanes, is that correct? Let me know what you think.

It seems to look better, but it looks like you have veered the Nicholson Rd to join it to the on/off-ramp (was up to the bridge), then created a new section of road with same attributes to join to the bridge. I’d leave it as one continuous road until the bridge, then have a motorway_link section for the slip lane off/onto Nicholson Rd to the on/off-ramps. Mainly since Nicholson Rd doesn’t veer off to the left to the onramp, it goes straight, but a slip lane veers off (slip-lanes are *_link ways that are determined by the highest level of way it connects to, therefore motorway_link, just like the on/off-ramps).

Silly question, but it looks like the page you referenced is copyrighted, did you get permission from your work to use the data? I’d suggest adding source:name=The University of Adelaide or similar, or removing the data until someone can survey it.

You can't verify the names with other sources, unless they are public domain or license is suitable for OSM. I see it as the whole point of OSM, if people add or verify (& potentially change) data from copyrighted sources, it's tainted & not really free anymore. It also makes the efforts of all the OSM people "doing it the right way" seem cheated :P

In Melbourne we were using out-of-copyright maps from Melbourne Metro Board of Works (water utility). But visiting the streets and noting the name is the way to go (grabbing a photo of the street sign is ultimate - proof that you were there & got the name directly from the sign).