[Tagging] bridge=humpback ?

[fly]

Can't we use traffic_calming=hump for this situation or some barrier=*?

cu fly

Am 10.08.2014 16:23, schrieb Colin Smale:
> No need to define it as UK-only... such bridges occur across the whole
> world, I am sure. The UK may be unique by having a specific road sign,
> which may indicate that a bridge could/should be tagged as a humpback
> (as stated in the wiki[1]). There is also a sign for explicitly
> indicating a "risk of grounding" often seen at railway crossings.
> 
> In the UK it can be made objective by linking the use of the tag to the
> presence of the sign, but then we would miss the many bridges which "the
> average person" would call a hump bridge but are not signed as such.
> 
> I would suggest something like "a bridge requiring driving speed to be
> reduced due to the vertical profile" (i.e. not because it is narrow, or
> some other attribute).
> 
> Not sure this depends on who is driving by the way, the laws of dynamics
> apply to all of us equally. But I agree that calculating whether a
> particular truck can pass a particular bridge is not easy to put into
> simple tags. It can be rather complex, which is why products like [2] exist.
> 
> --colin
> 
> [1] http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom
> 
> [2] http://www.autopath.co.uk/
> 
>  
> 
>  
> 
> On 2014-08-10 15:34, Никита wrote:
> 
>> I'm fine with this tag being used in UK. But I care about it's
>> definition. If this tag will be interesting only in some territory,
>> why not to define this tag specific to UK? You didn't answer how we
>> should define "humpiness" of bridge?.. Is this you who minority and
>> cannot pass this bridge without speed reduction or it is me who can
>> drive everywhere at regular speed? This is really subjective.
>>
>>
>> 2014-08-10 16:47 GMT+04:00 Yves <yvecai at gmail.com
>> <mailto:yvecai at gmail.com>>:
>>
>>     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.smale at xs4all.nl <mailto:colin.smale at 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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>>
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