[Tagging] Access by permit

[Colin Smale]

On 2017-09-21 14:27, Martin Koppenhoefer wrote:

> 2017-09-21 12:10 GMT+02:00 joost schouppe <joost.schouppe at gmail.com>:
> 
>> I mentioned two different situations where access=permit would also be the most logical tag: 
>> 
>> - access to a Low Emission Zone
> 
> IMHO this has nothing to do with "permit", you don't need a permit, you (or better: your vehicle) must satisfy certain conditions. Those are more similar to maxweight or maxheight IMHO ("maxemission").

It is sometimes a condition that you are in possession of a document,
which has to be applied for, can be refused, and must be produced on
demand. For example the German Umweltplakette which you may be familiar
with. No sticker means no entry. You can get a ticket for "failing to
display a sticker." That passes the duck test for being a permit. 

Other LEZs are enforced by number plate recognition linked to a big
database. In this case there is no permit, because you don't have to
apply for anything. 

And then there is London, which lets anybody in (except for trucks) but
charges a varying amount according to the vehicle. This is not a permit,
this is a toll or a usage charge.
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