[Tagging] Slow vehicle turnouts

Dave Swarthout daveswarthout at gmail.com
Wed Sep 12 22:21:34 UTC 2018


>You say "turnout".  But physically, is it just an additional lane that
>appears, and (more or less) one is obligated to move right one lane into
>it if you're in the way?

Exactly. I explained this several posts ago. It is an additional lane,
running for perhaps a quarter mile, sometimes longer, that any vehicle
which is holding back some number of other vehicles is obligated to use so
that those following vehicles may pass. The reason I used the term
"turnout" is because the signage erected by the Alaska DOT uses that term,
as in, "Slow Vehicle Turnout Ahead 1500 feet".

I see polyglot is ready to add some sort of processing to JOSM's
PT_Assistant plugin if only we can decide what to call such lanes in OSM. I
think the term slow_vehicle would work just fine.

Dave

On Thu, Sep 13, 2018 at 12:11 AM Jo <winfixit at gmail.com> wrote:

> A few months ago bus_bay=left|right|both was voted. For me this is
> similar, albeit over a longer distance.
>
> extra_lane_for_slow_moving_traffic_to_compulsory_halt_to_let_other_traffic_pass_by=left|right|both
> ?
>
> If you figure out which tag to use, we'll add it to the double split map
> mode of JOSM's PT_Assistant plugin.
>
> Polyglot
>
> Op wo 12 sep. 2018 om 18:49 schreef Greg Troxel <gdt at lexort.com>:
>
>>
>> > 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.
>>
>> Sorry, didn't get that this is not climbing lane (my fault).   In New
>> England, extra lanes that one would associate with "slow vehicle" are
>> 99% on hills.
>>
>> > Perhaps "slow_moving" isn't the best term for this sort of highway
>> turnout
>> > but it does the job.
>>
>> You say "turnout".  But physically, is it just an additional lane that
>> appears, and (more or less) one is obligated to move right one lane into
>> it if you're in the way?
>>
>> Do any routers do anything?  An example of how the data would be used,
>> or how you think it would be used in an ideal future might be
>> illuminaing.   Perhaps one's car computer could notice from forward
>> radar that there is obstructing traffic and query osmand and give you a
>> notification that the road becomes multilane in some distance, so you
>> can get ready to blink to get the obstructor to move over if they stay
>> left?   In that case, I wonder about the difference between a change to
>> two lanes (perhaps because the row is wide enough and the long-term plan
>> is 2) and a specific place like you describe.
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>

-- 
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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