Not specifically to roads, tertiary is the natural next step after primary and secondary; the next one would be quaternary, I think.
In the US, official language pertaining to warnings and hazards tends to stick to older words like non-potable or inflammable. On Jul 22, 2012 9:33 AM, "Philip Barnes" <p...@trigpoint.me.uk> wrote: > On Sat, 2012-07-21 at 11:43 -0400, David ``Smith'' wrote: > > Just contributing another data point on vocabulary… > > > > I am a native English speaker from Ohio, USA. I have been aware of > > the term "potable" for many years, probably since asking what it meant > > after seeing a water source labeled "non-potable". I have seen that > > warning on taps in public parks, and on many trucks and railcars. > I am a native English speaker from the UK, I have never seen the term > potable used in the UK. Labels on taps use the term 'drinking water', or > 'not drinking water'. Any council using the word 'potable' is likely to > be slammed by the Campaign For Plain English. > I only understand potable because I have studied French, and have a good > memory. We really should stick to 'Drinking Water', as does real world > signage. > > > On the other hand, I'd never heard of a "trunk road" before joining > > OSM. I still don't know any objective way to tell the difference > > between trunk, primary, secondary, tertiary, and unclassified roads, > > and I'm amazed there aren't rampant edit wars over those distinctions. > > I think it's silly that "unclassified road" is in fact a specific road > > classification. I'd never heard of a "weir" before joining OSM, > > desptie the existence of several in my home area. > > > The classifications, certainly Trunk, came from the UK. I do not know of > any easy way of identifying a Trunk road. Other than googling my way > through various local authority/highways agency websites (which then > cannot be used on OSM). Trunk roads are 'Primary A roads, funded by > central government. Other primary A roads are funded by local > authorities, both have green signs and in the UK are mapped as Trunk > roads, as there is rarely anything on the ground to differentiate them. > > Trunk road is a largely outdated term, in the same way as wireless is > when referring to a radio receiver. > > We map secondary A roads (white signs) as Primary, and B roads as > secondary. > > I don't know where the term tertiary came from, its a word outside of > OSM I have only heard in The Hitchikers Guide to the Galaxy, The > Tertiary Phase. But really have no idea what the word means of why it > was chosen. You will not find any highway authority referring to roads > as Tertiary. My view is that tertiary roads are C roads, but the numbers > rarely appear on road signs. I have seen maps showing these, but again > they are copyright and unusable on OSM. But there are a lot more than > many think, they IMO are the non-M/A/B roads that are gritted in the > winter and hence every village will have at least one. But in reality > mapping them is a matter of if it feels right. > > Phil > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > http://lists.openstreetmap.org/listinfo/tagging >
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