[Tagging] Meaning of access=yes on highway=footway?

[Raphael]

Hello everyone

I recently got lost with OsmAnd because it wanted to guide me by car
along a (public) footpath (highway=footway) tagged with acces=yes. Is
this a routing or a tagging error? That is, does access=yes on
highway=footway mean that the footpath is open to all vehicles or that
only pedestrians are allowed?

Best regards

Raphael (dafadllyn)