On Fri, Apr 21, 2017 at 10:30 AM, John Sturdy <jcg.sturdy at gmail.com> wrote: > This sounds like a sluice gate to me: > http://wiki.openstreetmap.org/wiki/Proposed_features/sluice_gate > > Or is there some significant difference? that's what I use (I seem to be one of the more heavy users of this tag). m.