[Tagging] RFC - Hazards - 2 Week Update & RFC Summary

[Jeremy Harris]

On 09/12/2020 19:43, Paul Allen wrote:
> On Wed, 9 Dec 2020 at 18:13, Brian M. Sperlongano <zelonewolf at gmail.com>
> wrote:
> 
>>
>>
>>> Here are the ones that I think are worth considering:
>>>
>>>     - Opening or swing bridge ahead
>>>
>>> This is already covered by the approved tag bridge:movable and its
>> various sub-keys that describe different types of movable bridges.
>>
> 
> For the swing bridge, it's covered.  But the text says "Opening or swing
> bridge."
> I have no idea what an opening in a route might be if it's not a movable
> bridge
> but maybe somebody else on the list does.

Lift bridge.  Has a horizontal axis for the moving part, which moves vertically.
Think of Tower Bridge,

As opposed to a vertical axis so that the bridge roadbed can swivel in
the horizontal plane.  That would be a "swing bridge".

Both are "opening bridges".


>     - Hidden dip
> 
> Maybe.  There is a barely used tag hazard=dip.  Is this a permanent feature?
>>
> 
> I don't know.  I don't recall ever seeing that sign.  But in my part of the
> world we have old hump-backed bridges so it's conceivable we have
> roads with hidden dips, too.

It's a hazard you want to know about if you are a car driver thinking
of an overtake.  "don't do it; an oncoming car might suddenly appear".

-- 
Cheers,
   Jeremy