|foot = use_sidepath|
|Use compulsory parallel footpath instead|
|Used on these elements|
|Status: de facto|
|Tools for this tag|
This tag, like bicycle=use_sidepath, applies only to roads with a classification that allows pedestrian use. In some countries it is illegal for pedestrians to use a road if a parallel compulsory sidepath exists. On OSM, this can be indicated by tagging the main road as foot=use_sidepath if the sidepath is mapped separately. foot=no should be used if the main road is explicitly forbidden, typically by a traffic sign on the main road, whether a sidepath exists or not.
Unlike bicycle=use_sidepath, this tag was never properly proposed and accepted. Due to its considerable use however (often in combination with bicycle=use_sidepath), routing engines should treat it as a negative access value (i.e., equivalent to foot=no or a bit weaker) to prevent pedestrian users from being routed along illegal or even dangerous paths.
How to tag
This tag applies to ways where a parallel way suitable and mandatory for pedestrian traffic is mapped. In some countries (e.g., the Netherlands) the use of a parallel cycleway, footpath, or sidewalk is mandatory if present. If that parallel way is mapped, this tag can be used on the way that should not be used to indicate the compulsory use of the parallel way. Often, this tag will be combined with bicycle=use_sidepath.
This tag is used frequently in the Netherlands and in Germany. The lack of documentation and formal acceptance of this tag is discussed on the Dutch forum here.