[Tagging] Slow vehicle turnouts

Dave Swarthout daveswarthout at gmail.com
Wed Sep 12 14:11:30 UTC 2018

Again, I emphasize, this is not a crawler lane or a hill climbing lane. It
is a lane into which one pulls over to allow faster moving traffic to pass.
In fact, Alaskan law demands that any vehicle being followed by 5 vehicles
must, at the first opportunity, allow those vehicles to pass. I doubt
anyone has ever been ticketed for this offense but nevertheless, the law
exists. Alaskan highways also have hill climbing lanes that are signed
"keep right except to pass". Those lanes are not the same as this one.

Perhaps "slow_moving" isn't the best term for this sort of highway turnout
but it does the job.

On Wed, Sep 12, 2018 at 6:59 PM Warin <61sundowner at gmail.com> wrote:

> On 12/09/18 21:44, Greg Troxel wrote:
> > Dave Swarthout <daveswarthout at gmail.com> writes:
> >
> >> Same here. I don't have any objections to either the abbreviation or the
> >> longer form. "smv" just seemed to fit well with the other abbreviations
> >> already in heavy use.
> >>
> >> Does anybody else have input on this?
> > I have significant discomfort with smv and a bit with slow_vehicle,
> > because hgv is a in OSM is defined as a vehicle with an allowable gross
> > weight (GVWR in US terms) over 3500 kg (that's not a bus or a passenger
> > car).  So a given vehicle is or isn't an hgv, and it doesn't change.
> I'm happier with slow_vehicle as I need to think less about what it means
> compared to smv.
> > A slow vehicle, on the other hand, is any vehicle, regardless of actual
> > and permitted weight, that is driving below the prevailing speed in the
> > right lane, or is about to be because of a hill.  A vehicle that could
> > be driven at an adequate speed, piloted by someone who chooses not to,
> > is still a slow vehicle, and an empty truck might well not be.
> >
> > So I would call it "climbing_lane", although I suppose there might be
> > such lanes not on hills.  A tag of "slow_vehicle" seems ok, because it
> > doesn't imply parallel structure with hgv.
> There may be lanes for going down steep hills too - where the grade may
> lead to vehicle run away if the speed is not kept down.
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Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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