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I've made the observation that tracks with tracktype=grade1 are avoided in 'paved only' routing mode? Is this by design?
The wiki defines it as 'Solid. Usually a paved or sealed surface.'
At least in Germany grade1 is normally paved and perfectly usage with a road bike.
Do additional properties like surface/smoothness help to select it for paved routing?
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Comments
tracktype=grade1 is a really ambiguous tag. In Germany, you’re right, it usually means paved. In other countries it often means a good unpaved surface (compacted or similar). In some places it depends whether it’s applied to a road or a track… and so it goes on.
Coincidentally I’ve been working on the paved/unpaved logic over the past couple of days, so I’ve taken a look at this. As of the next map update (probably next week) it’ll now assume tracktype=grade1 means a paved road in mainland Europe. The logic will be a little different in the UK/Ireland, North America and Australia/NZ as usage differs there.
But I’d generally advise people to use surface=paved rather than tracktype=grade1 anyway – it’s much clearer!