> On Oct 26, 2018, at 6:26 AM, marc marc <[email protected]> wrote:
> 
> Le 26. 10. 18 à 01:18, Bryan Housel a écrit :
>> I don’t like `crossing=zebra` either.<...> iD will support these 2 presets:
>> - `crossing=marked` which is labeled “Marked Crosswalk"
>> - `crossing=unmarked` which is labeled “Unmarked Crossing”
> 
> thanks for understanding that a issue exist, the first step
> to solve it :)
> 
> but I don't understand how the new preset will solve the problem


Well.. The “problem” is not a tag problem, but rather a people problem.  

Even experienced OSM contributors can’t agree on what the top values for 
crossing mean (this thread should make this point clear) and beginner 
contributors are hopelessly lost because the current top values don’t even 
sound like what they are trying to represent.  (you can review the top values 
here:  https://taginfo.openstreetmap.org/keys/crossing#values)

“crossing=uncontrolled” - all new people I’ve talked to think this means “no 
markings”.  People with experience in traffic planning understand road markings 
as control devices.

“crossing=traffic_signals” - new people usually assume this means “has a button 
and walk/don't walk sign” - It says nothing about the markings or the safety of 
whether you should even cross there.  In many places there are traffic_signals 
but no markings.

“crossing=zebra” - new people think this is weird, but understand it means 
stripes on the ground like the Abbey Road album cover. 

“crossing=island” - nobody I have talked to knows how to use this tag.




> since you put the marking information in the key whose main use is to 
> inform the security of the passage (presence or not of traffic lights)
> We had 2 incompatible schemas, let's avoid to create a third one :)

`crossing=marked` and `crossing=unmarked` are not new.  They’ve been in use for 
years.

They solve the problem in that they are unambiguous and beginner-friendly.

Thanks,
Bryan



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