[Tagging] Classifying roads from Trunk to Tertiary and Unclassified

Philip Barnes phil at trigpoint.me.uk
Mon Aug 12 15:42:59 UTC 2019

There is at least one trunk road (green signs) which has a B classification. A6 to M6 near Shap.

Phil (trigpoint)


On Monday, 12 August 2019, Paul Allen wrote:
> On Mon, 12 Aug 2019 at 15:56, Martin Koppenhoefer <dieterdreist at gmail.com>
> wrote:
> >
> >
> > > If your country's government indicates with signs
> > > that a road as a primary route then that is what it is.
> >
> > no government says „primary“ road, they might say „A road“, or
> > „Bundesstraße“ but the latter is only telling that the Federal government
> > of Germany is in charge of the maintenance (i.e. it is somehow deemed to be
> > important, but it doesn’t say _how_ important it is, because importance
> > varies among Bundesstraßen, and it is only generally more important than a
> > Kreisstraße (local connection road), while in a specific case it may be
> > less important than a specific Kreisstraße.
> >
> There's always one country does it differently. :p  I've just had a look
> into it, and Germany is
> rather messy. :(
> Here the national government decides on which roads are primary and which
> are secondary.
> Some primary roads are designated trunk roads and they are maintained by
> national
> government with all others being maintained at the county level.  It's
> possible somebody
> could find an exceptional case and argue that a UK B-road ought to be
> tagged as a
> primary route, or an A-road be tagged as a secondary, but I doubt it.  In a
> few cases new
> roads or motorways have resulted in former A-roads being given a new B
> number by
> the government itself.  I'd hesitate to buck the system in the UK even if I
> found a
> very exceptional case.  Especially as speed limits and lane counts could be
> used
> by routers to prefer a secondary route to a primary route in some
> situations.
> A map that highlighted roads in a way that conflicted with signage would be
> somewhat
> confusing.  Here we're used to the idea that a primary route is a better
> choice than
> a secondary route, all other things being equal.  If you're planning a
> journey you look
> at the primary routes first and maybe refine it a little by diverting onto
> secondary routes
> for part of the journey (actually you'd look at motorways first).
> I’m all for recording these classes (we do it in ref in Germany and Italy),
> > but they cannot be an argument in the individual case in favor of a
> > specific osm highway class.
> >
> In the case of Germany, I agree.  In Germany it's not that simple.  From
> what I've read
> the number of digits indicates how important the road is.  Sort of.  There
> are exceptions.
> :(
> -- 
> Paul

Sent from my Sailfish device

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