An impressive effort Ian but I think you have underestimated the length
of Roads in WA.
From Main Roads WA report:
Road length excluding DPAW managed roads = 147,676
DPAW managed Roads (National Parks, Forestry etc) = 38,333
Mappers in WA have a long way to go. I suspect a large percentage of
the sealed roads have been mapped on OSM. The remainder are almost all
unsealed.
The NT may be in a similar position.
Nonetheless an interesting report. Thanks for sharing.
Warren
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