[Tagging] Tags useful for rendering of roads in poor conditions

[David Bannon]

On Wed, 2014-01-01 at 22:00 -0200, Fernando Trebien wrote:
> .... A smarter router could even change this preference
> based on weather conditions (under rain, sett gets considerably
> slippery, and dirt would be far less preferable than compacted).
> 

I guess that is why I like the use of tracktype=, its a hierarchical
tag, its easy for a router to decide to show (eg) grade1 through to
grade3 roads and not offer grade4 and grade5. A user can switch their
router to what ever level of 'braveness' that they feel.

I think the values possible under surface= are less clear, is =dirt
better than =earth ?  Badly maintained =compacted can be far worse than
=dirt sometimes, pot holes (as we call there here) can be unexpected and
dangerous at speed. There are so many legal values ....

David