Modify the speed limit for the whole road (highway)

General talk
1

Hello All,

I would like to modify the speed limit for the highway around Brussels, Belgium (modified from today, from 120 km/h to 100 km/h).
The road is split in a lot of lines, but is tagged as the same Road Number (“R0”).

So my question is: how can I modify the speed limit for all the lines that have the same Road Number (or the same nat_ref and ref tags)?
In other words, I would like to apply the same maxspeed to all the lines were the nat_ref and ref tags are R0.

Thank you very much in advance.

2

Use JOSM and to limit the amount of data you have to download, use the “Download from Overpass API” option.

Query would be something like

[out:json][timeout:250];
(
  way["nat_ref"="R0"]({{bbox}});
);
out body;
>;
out skel qt;

And then select only the parts you need and change the maxspeed.

3

There is inconsistency in tagging - some sections of the highway has the tag nat_ref=R0, but not all of them. Some have ref=R0, but not all.

Use this overpass query:

https://overpass-turbo.eu/

[out:json][timeout:200];
{{geocodeArea:Belgium}}->.searchArea;
(
   way["nat_ref"="R0"](area.searchArea);
   way["ref"="R0"](area.searchArea);
);
out body;
>;
out skel qt;

There are 500 road segments. You can export them to Level0 editor: Export → Data → Level0.
In Level0 you can edit up to 500 objects, so it’s perfect. Change maxspeed=120 to maxspeed=100. It would be good if you add source:maxspeed=* tag too. Note that some parts have 90 km/h limit.