[OSM-talk] path or byway ?

[Nick Whitelegg]

>What is the limit between "highway=byway" and "highway=track" ?

Byway is an official byway (a certain class of right of way in the UK), 
or, if motorcar=no added, a restricted byway.
A "highway=track" is any other type of track - you can use the 
foot/horse/bicycle tags to describe precisely what sort of traffic is 
allowed on it.

See

http://wiki.openstreetmap.org/index.php/UK_Countryside_mapping

This is UK based but the principles could potentially apply anywhere.
Arguably, a highway=byway could be used internationally for any track in 
the countryside which motor vehicles are permitted on. 

Nick