[OSM-talk] Changes to Key:access wiki page

[Christiaan Welvaart]

On Sat, 22 Aug 2009, Craig Wallace wrote:

> On 22/08/2009 20:33, Christiaan Welvaart wrote:
>> I changed some things on http://wiki.openstreetmap.org/wiki/Key:access -
>> only to document current (best) practices.
>>
>>
>> Added a separate tag for cars, because AFAICT any routing app computing
>> routes for cars uses this transportation mode. If routing would be done
>> for 'motorcar', ways tagged as hazmat=no, for example, could not be used
>> because the motorcar *could* be a hazmat vehicle. Maybe the actual tag is
>> not needed, in which case the description can stay but the tag removed.
>>
> There already is a separate tag for cars: key:motorcar.
> I think trying to define this as different from an "automobile" is
> confusing. Have a look at Wikipedia for example, which says they are
> different terms for the same thing: http://en.wikipedia.org/wiki/Automobile
> I think your definition of motorcar (category: motor vehicles with more
> than 2 wheels / more than 1 track) is confusing / wrong.
>
> goods/ hgv / psv / hazmat etc should be in the hierarchy directly below
> "motor vehicle", not below "motorcar".

Finally figured out what was going on: I did not look closely enough at 
the picture apparently - fixed.

>> BTW what is a hov?
>>
> I assume it's "high occupancy vehicle", ie a vehicle with more than a
> certain number of passengers in it. In some places they are allowed to
> use bus lanes etc.

Sure, but is this not a bit too complicated to put between the regular 
access tags? For tagging, hov= can be used although it makes me wonder 
what the exact qualifications are. But a routing engine supporting this 
should also allow specifying that at some point the number of passengers 
drops below the limit. With hov in the hierarcy this would mean the 
remaining passengers are suddenly sitting in a different kind of vehicle. 
That seems strange at least (:


     Christiaan