What should count as a severance?

Based just on OSM tags, currently a severance is when `highway` is motorway, trunk, primary, or those 3 with _link. I made this definition for Hong Kong. Do the results look correct everywhere? If it should be refined somewhere, please link to the OSM way that's either a false positive or negative (use debug mode and click).

The issue is about refining the definition of a severance based on OSM tags. Start by examining the current tag logic in the codebase, likely in a file handling OSM data parsing. Use debug mode to inspect OSM ways flagged as false positives or negatives. Review the linked OSM way examples (if any in comments) to understand edge cases. Determine if the tag list (motorway, trunk, primary, _link variants) needs adjustment for different regions.

Written by the indexing model from the issue text.