Nicholas Barnes wrote:
> Shaun McDonald wrote:
>   
>> I have seen many roundabouts split up so that the bridges can be added 
>> properly, so started doing it myself some time ago.
>>     
>
> Which begs the question.... what is the point of tagging as way as a bridge?
>
> Other than what the rendered map looks like (and I keep hearing that 
> we're not meant to be tagging for the renderer), I can't see the point 
> of messing up a perfectly formed roundabout with all parts set with the 
> correct 'layer' tag when all you end up with is a roundabout which 
> renders as badly as this one: 
> http://www.openstreetmap.org/?lat=52.46457&lon=-1.70987&zoom=15&layers=0B00FFF
>
> Surely it's perfectly obvious that if a road goes underneath another 
> road, there must be a bridge involved.
>
> Sorry for the rant, but I've just fixed two roundabouts where the layers 
> were all set incorrectly at about the time somebody added those bus routes.
>
> Nick.
>
>   
It may be obvious sometimes, but even in your example, it's not obvious 
whether
the two slip roads to the E and SE of that roundaboud go over or under 
the A446?

Bridges are too important a landmark to omit.
Mario



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