[Talk-us] highway: tertiary?

Alex S. maps at swavely.com
Sun Sep 14 14:48:05 BST 2008


David Carmean wrote:
> I'm not sure if this question is within scope of this list, but 
> I thought it might be sufficiently country-specific:  when is it 
> appropriate to use "highway: tertiary" in the US?

I use it like so:
tertiary - through residential areas: two-lanes, maybe with street 
parking but often not, lanes delineated by yellow lines (in lesser 
populated areas, often no shoulder).
Through commercial areas: storefronts usually face away from these 
two-lane streets - they feel like a bypass, u-turn route or only there 
to get to 'parking out back' lots.
Often called 'back-streets' or 'minor arterials'.  In my area, they are 
often delineated further by 'arterial route' signage.





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