[Tagging] Clarification unclassified vs residential

[Fernando Trebien]

On Wed, Feb 27, 2019 at 3:53 PM Paul Johnson <baloo at ursamundi.org> wrote:
> On Wed, Feb 27, 2019, 12:41 Jarek Piórkowski <jarek at piorkowski.ca> wrote:
>> On Wed, 27 Feb 2019 at 13:32, Paul Johnson <baloo at ursamundi.org> wrote:
>> > On Wed, Feb 27, 2019, 11:25 Fernando Trebien <fernando.trebien at gmail.com> wrote:
>> >> I never thought that emergency access would determine highway
>> >> classification. It seems like a secondary use of the way, not its main
>> >> use/purpose.
>> >
>> > motor_vehicle=no would exclude most emergency vehicles.
>>
>> I thought we were saying access tags like motor_vehicle are legal
>> access, not physical access. I do not expect emergency vehicles to be
>> excluded by legal access tags.
>
> access=no by itself is absolute.  I would expect most roads in the DMZ between the Koreas (that aren't too overgrown and weathered away from a half century of being disused) would be an extreme example.  You're not getting even fire or paramedic vehicles down it, period, it's not happening.

Actually access=* gets overridden by any other more specific access
tag in the access hierarchy [1]. So access=no+foot=permissive means no
access to everyone except pedestrians, which are explicitly
authorized.

[1] https://wiki.openstreetmap.org/wiki/Key:access#Land-based_transportation

-- 
Fernando Trebien