[Tagging] Track grades

[Volker Schmidt]

The combination of tracktype, surface and smoothness could fit the bill.
However smoothness values are ill-defined and would need more objective
classification, but they also refer to things like high-clearance vehicles

see:
http://wiki.openstreetmap.org/wiki/Key:smoothness



On 8 July 2014 21:14, Marc Gemis <marc.gemis at gmail.com> wrote:

> Hello Jesse,
>
> welcome to this list. This is indeed the right list to post this type of
> questions.
>
> However, this question has popped up every few months the past year and so
> far so consensus has been reached. You can always search the tagging
> archive and you'll find threads such as
>  https://www.mail-archive.com/tagging%40openstreetmap.org/msg15943.html
> (this is not the first one in the thread though)
>
> regards
>
> m
>
>
> On Tue, Jul 8, 2014 at 9:00 PM, Jesse Crawford <jesse at jbcrawford.us>
> wrote:
>
>> Apologies if this is the wrong list, I'm new to the community.
>>
>> On the wiki talk page for tracktype [1] there is some discussion from
>> Australians of this property not properly reflecting road usability. Here
>> in desert New Mexico I am working on significantly improving mapping of
>> tracks, and I have the same problem. Many tracks here are apparently Grade
>> 1 or 2 as they are made up of well-compacted gravel and exposed bedrock.
>> However, due to grade or unevenness they are often unsuitable (and unsafe)
>> for 2WD or low-clearance vehicles. These paths are often quite dangerous to
>> be stuck on, miles away from the nearest person and beyond phone reception.
>>
>> It seems that there are properties to express information like evenness,
>> but they are not taken into account by the standard renderer while the
>> Grade is. Are there any plans to redefine Grade or create a new property
>> for use by renderers that directly expresses the usability of a road?
>>
>> My suggestion would be adding a property (perhaps "suitability") with
>> values of "2wd" and "4wd," which matches the semantics used by e.g. Forest
>> Service maps which often show 4WD-only tracks with a different line.
>>
>> As a second but similar question, off-highway vehicles are a popular
>> pasttime here and there are many tracks intended for ATVs or dirtbikes, not
>> wide enough for SUVs. Is there a best practice for tagging these types of
>> paths?
>>
>> Thanks!
>>
>>   [1] https://wiki.openstreetmap.org/wiki/Key:tracktype
>>
>> Jesse B. Crawford
>> Student, Information Technology
>> New Mexico Inst. of Mining & Tech
>>
>> jcrawford at cs.nmt.edu | jesse at jbcrawford.us
>> http://cs.nmt.edu/~jcrawford | http://jbcrawford.us
>>
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