[Tagging] bridge=humpback ?

[David K]

I support a general tag for hill crests with sufficient vertical curvature
to introduce a visibility, grounding, or takeoff hazard.  It could be
applied to railroad crossings, humpy bridges, or just roads traversing
hilly terrain; all of these situations can be found in central Ohio.  Using
this tag on a node at the crest of the hill should be acceptable, as the
hazard may occur (potentially in multiple places) along fairly long way.

PS — the american MUTCD has a warning sign for vertical curvatures that may
cause long vehicles to ground.

David K
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