[OSM-newbies] Fence in middle of street

Dave F. davefox at madasafish.com
Thu Feb 4 01:50:46 GMT 2010


James Ewen wrote:
> On Wed, Feb 3, 2010 at 5:48 AM, Dave F. <davefox at madasafish.com> wrote:
>
>   
>>> Then yes, I put a node or a short line (if I can draw the fence as
>>> well) tagged with barrier=gate. Then I split the highway at the node
>>> with the barrier
>>>       
>> Why?
>> If there's a gate the highway is continuous & traversable. Doing that
>> would cause problems for the likes of routers.
>>     
>
> Why is this such an issue? When you put a bridge in a way, you have to
> split the highway at both ends of the bridge, yet no one complains
> that the routers won't be able to figure out how to route someone down
> the road and across the bridge. When a road surface changes, you have
> to split the way. Again no problem with routers sending someone down
> the road. Same thing when a road goes from single lane to double,
> splits into a divided roadway, speed limit changes, or a multitude of
> other tags changes that require the way be split.
>   

OK, you're correct about the router. It won't make any difference, but I 
still don't see what advantage splitting the highway at the node barrier 
is going to bring.

>   
>>> and add one of the access tags on the highway itself within the
>>> restricted area (private/permissive/destination)
>>>       
>> Only if there clear indication such as a sign.
>> Farm fields have barriers just to prevent the livestock escaping. Why
>> would you put an access tag to the field entrance gate?
>> If there's a public footpath passing through that gate you wouldn't put
>> an access tag, would you?
>>     
>
> Depending upon what part of the world you live in, gates can be for
> more than limiting movement of livestock.

Oh yeah, I'm aware of that. I was give just one example & not expecting 
it to be taken as all encompassing.
Thomas was saying 'always', & I gave examples of when that probably 
wouldn't be the correct thing to do.






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