I have a web map that is using the pedestrian routing from Mapbox's directions API. However, users have seen very long circuitous paths in certain locations because it appears that sidewalks (and/or foot access being allowed) are missing in the underlying OSM data. Is there an easy way to identify these gaps to fix within a major a city? Is there a way to query Overpass-Turbo to display roads/streets that have
access:foot=not specified (or access, not food)?
According to Mapbox
The Directions API (Walking profile) allows routing via all roads except:
- trunk roads
- all other roads where the value of either the 'foot' or the 'access' tag is set to any of 'no', 'private', 'agricultural', or 'forestry'
Roads other than motorways and trunk roads not having a 'footway', 'foot', or 'sidewalk' tag associated do not hinder routing as by default these routes are assumed to be accessible by pedestrians.