There is a lot of things not of interest to the majority of users in OSM, this 
is why it is rich.
Yves


On 10 août 2014 12:41:22 UTC+02:00, Colin Smale <colin.sm...@xs4all.nl> wrote:
>On 2014-08-10 12:13, Никита wrote:
>
>> I.e they define this tag as subtype of 
>> http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real 
>> application/use to bridge=humpback. Also, bridge=humpback does not 
>> imply covered=yes by default. It does not define routing aspects or 
>> adds any features to end users.
>
>In the UK there are warning signs for some humpback bridges, and with 
>good reason - if you don't slow down substantially from the ambient 
>speed you will be launched into orbit. Therefore they should be useful 
>for routers, implying a lower speed on that part of the road.
>
>https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
>
>Some are so "humpy" that a vehicle with a long gap between the axles 
>and/or a low ground clearance (e.g. a low-loader) may actually be
>unable 
>to cross the bridge.
>
>So I don't think it is right to say that bridge=humpback cannot be of 
>value for routing or end users...
>
>--colin
>
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