[Tagging] Slow vehicle turnouts

Steve Doerr doerr.stephen at gmail.com
Tue Sep 11 15:58:08 UTC 2018

Let's scotch this idea of smv straightaway. Whereas PSV, HGV and LGV are 
well-established abbreviations, at least in UK English, I've never come 
across slow-moving vehicles referred to as SMVs - this seems to have 
been made up on the fly in this thread. We don't really like 
abbreviations in OSM anyway. As slow-moving_vehicle is a bit of a 
mouthful, I'd suggest slow_vehicle as a reasonable tag to use. Or crawler.


On 11/09/2018 13:07, Dave Swarthout wrote:

> Okay, I guess the consensus here is that, even though I dislike it, I 
> must use the lanes approach. In my original tagging, I had invented a 
> new category of service road, service=slow_vehicle_turnout, but 
> perhaps an abbreviated form of slow_moving_vehicle would be more 
> consistent and easier in the end. In the example provided by 
> SelfishSeahorse, he uses smv:lanes:forward=|designated (as well as its 
> counterpart in lanes:forward) and that seems consistent with other 
> abbreviated tags, like hov and hgv so I'll use that terminology in my 
> tagging. Perhaps someone of you would like to add the smv abbreviation 
> and description to the Wiki.
> Thanks for the input and discussion,
> AlaskaDave
> On Tue, Sep 11, 2018 at 3:24 AM Kevin Kenny <kevin.b.kenny at gmail.com 
> <mailto:kevin.b.kenny at gmail.com>> wrote:
>     > On Mon, Sep 10, 2018, 14:36 SelfishSeahorse
>     <selfishseahorse at gmail.com <mailto:selfishseahorse at gmail.com>> wrote:
>     >>
>     >> I wasn't aware that it is allowed to cross a single solid line
>     in the
>     >> USA. Hence forget the overtaking:lanes:<forward/backward>=* tags in
>     >> the example in my last message.
>     On Mon, Sep 10, 2018 at 3:48 PM Paul Johnson <baloo at ursamundi.org
>     <mailto:baloo at ursamundi.org>> wrote:
>     >
>     > It's a recentish (late 90s/early 2000s) update to the MUTCD,
>     before that you would be correct (and usually as a stopgap between
>     striping, places where this is still the case is highlighted by
>     signage, but this is getting to be rare as most plsces have had
>     long enough to require a repaint if not a repave since then).
>     The states have had considerable leeway in how they mark their own
>     highways (the Federal government has control only on the highways that
>     it funds).  New York has used a single solid white line to mean 'lane
>     crossing discouraged but not prohibited' for the 45 years that I've
>     been driving here. Prohibited lane crossings have, for at least that
>     long, been set off by double lines or by partial-barrier lines with
>     the solid line toward the lane that must not be departed from.
>     I seem to recall that the meaning of a single solid yellow line has
>     varied from 'crossing discouraged', to 'crossing forbidden but left
>     turns permitted', to 'crossing prohibited'. The current drivers'
>     manual states that they have the same regulatory effect as a double
>     yellow line. (Left turns across a double yellow are permitted only
>     when they can be accomplished without impeding traffic in either
>     direction and only into private driveways, entrances and alleys.) The
>     only single yellow center lines I've seen in the last couple of
>     decades have been on private roads, where they mean, 'the owner was
>     too cheap to shell out for enough paint for standard markings.'
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> -- 
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com
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