[Tagging] improve tagging of traffic_calming

[Georg Feddern]

Am 20.11.2015 um 17:29 schrieb Marc Gemis:
> On Fri, Nov 20, 2015 at 5:23 PM, Florian Lohoff <f at zz.de> wrote:
>> http://www.mapillary.com/map/im/LeaK3riwsMuv7f0i3Jt3XA/photo
> I would tag the crossing as a node and the "table" as part of the way,
> not as a node.

If it is really enforced to identify a traffic calming only by presence 
of highway=traffic_calming - this is the only way because

> but a combination of highway=crossing; traffic_calming=table on a node
> could work as well.

won't be identified as a traffic calming then.

Otherwise:
If a node with highway=crossing and with traffic_calming=* should be 
identified as a traffic_calming
we won't need highway=traffic_calming anymore ...

Regards,
Georg