This road have to be spitted on two ways for dual carriage way road.
We need to get installed Relation Toolbox plugin. It will help us to deal with relations.
Take a look on relation
After we get familiar with all relations we may to start.
In this case all relations are
route=road that is simplest situation.
Find place where need to split the road on two ways. Here is https://www.openstreetmap.org/#map=20/34.1066178213146/-117.42713700569719
Split the road on two separate ways.
Existing way we place for one direction and add
oneway=yes tag, trace a new way for opposite direction; copy tags from existing way to the new way. Main purpose of copying tags is to transfer
highway tags and accompanying to them information on to a new way. Further we will review and adjust tagging for each direction accordingly.
Adding new way into existing relations:
- select relation on the existing way in Relation Toolbox;
- select new way and click
➕to add it into selected relation;
☝️this steps for all
routerelations from the list.
To check if the all ways are members of relation select relation in Relation Toolbox. It highlights selected relations and allows to see if there are missing segments.
Splitting on two ways is finished and you'll need to review and assign appropriate tags (
lanes, turn:lanes and so on) on the segments of the roads.
If the relation did not have errors and omissions before making our changes it will remain valid after our edits.
But if you have a wish and time you may download whole relation and review it.