[Tagging] Feature Proposal - RFC - Runway Holding Positions

Steven Estes tapestes at gmail.com
Thu Mar 28 20:02:26 UTC 2019

Tackle this a bit on the proposal page, which notes that holding_position
as currently formulated has two limitations. First, it's  fairly broad.  It
includes runway holding position markings, ILS critical holding position
markings, and interim holding position markings.  Each of these markings is
used in a different way, and if I were to pull OSM data into a flight
simulation environment, the lack of distinction would be a huge problem.
Second, it's defined as a node rather than a way, but to be useful, the
full hold line (holding position marking) needs to annotated as it can't be
assumed that the line is either straight or perpendicular to the taxiway
centerline.  If the second issue were the only problem, I'd be inclined to
just modify the existing tag to include ways (which appears to be used in
20% of all cases anyway).  But, if I change the tag to apply only to runway
holding position markings, I imagine that would create all sorts of
downstream problems.

On Thu, Mar 28, 2019 at 2:34 PM Mark Wagner <mark+osm at carnildo.com> wrote:

> On Thu, 28 Mar 2019 13:27:23 -0400
> Steven Estes <tapestes at gmail.com> wrote:
> >
> https://wiki.openstreetmap.org/wiki/Proposed_features/runway_holding_position
> >
> > Proposing the addition of runway holding position markings (commonly
> > called hold lines). Runway holding position markings are painted
> > markings on an airport surface that identify the runway safety area.
> > At controlled airports, these markings indicate where an aircraft is
> > to stop if the aircraft does not have permission to enter the runway.
> > When exiting a runway, an aircraft is not considered clear of that
> > runway until all parts of the aircraft have crossed the holding
> > position marking. The runway holding position is painted across the
> > runway or taxiway and consists of two solid lines on the side that is
> > clear of the runway safety area and two dashed lines on the other
> > side.
> >
> > Greatly appreciate any comments folks have.
> How does this differ from aeroway=holding_position
> (https://wiki.openstreetmap.org/wiki/Tag:aeroway%3Dholding_position),
> with 9300 uses
> (https://taginfo.openstreetmap.org/tags/aeroway=holding_position)?
> --
> Mark
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