Hello evgenykatyshev, I appreciate you highlighting that particular road segment and made the suggested changes in changeset/160629448 (changeset/160629448). Thank you!

Hi MenKauRa,

I was referring to the Simple Intersections section of that page (osm.wiki/Junctions#Simple_intersections) which states "A simple intersection is represented by the ways for the two roads sharing a common node.”

This editing standard is mentioned on several other OSM Wiki pages as well. For example, the Node page’s "Nodes on ways" section (osm.wiki/Node#Nodes_on_ways) mentions "Where ways intersect at the same altitude, the two ways must share a node (for example, a road junction).” And the Editing Standards and Conventions page’s “Junctions" section (osm.wiki/Editing_Standards_and_Conventions#Junctions) says ""All road junctions should be drawn as a node which connects the ways (both or several ways share the same(!) node).”

From my understanding, there is no scenario where highways should cross on the same layer without a shared intersection node, as this goes against OSM editing guidelines and can break routing.

Regarding the turn restrictions, no_left_turn and no_right_turn restrictions are accurate here, because this junction involves two oneways. I agree only_straight_on is also accurate, as both options provide identical routing results, and I’d be happy to update the turn restrictions to only_straight_on, if that’s what you prefer.

I hope that’s helpful and please let me know what you think. Thank you!

Hello MenKauRa. Thank you for keeping an eye on the data here!
To follow OSM Wiki guidance, all crossing highways that are on the same level must share nodes to represent the intersection (osm.wiki/Junctions#Simple_intersections), which is also called out in JOSM’s data validator for Crossing Ways (osm.wiki/JOSM/Validator#Validations).
That being said, I do understand your routing concern here and I’ve gone ahead and added turn restrictions at this intersection, to ensure turning maneuvers utilize the highway link and circular junction. Thank you for bringing this to my attention!

Hello Fran S,
Thank you for reaching out. The modifications were made with the idea that track classification is applicable to most highways within African national parks. However, I will defer to the edits you have made here as it matches the modeling in the area. Have a wonderful day!

Hello, Greg_Rose! Thank you for informing me ahead of time, I will be cautious of your changes in Mali. Happy Mapping!

Thank you for the comment, and thank you making updates here to keep a high quality of data which is inline with the East Africa Tagging Guidelines!

Hello AkuAnakTimur, thank you for your message. I will defer to your classification choice here and change this highway section back to service. Happy Mapping!