[Talk-ca] Road route relations: network tag

[Paul Norman]

On 10/27/2016 3:04 PM, Martijn van Exel wrote:
>
> My mapping colleagues (not me, I only map in my spare time :)) noted 
> that there are some irregular network tags on highways in Canada. The 
> usual hierarchical notation[1] is in place in many relations, but we 
> encountered deviations from that where instead of the colon separator 
> an underscore is used, so for example instead of CA:ON we see ca_on, 
> and some variations on that.

ca_... has been the long-standing standard. When I last looked at it, 
the US was the main user of colons. It's possible this has changed, but 
ca_on_county is still one of the most frequent network tag values 
(http://taginfo.openstreetmap.org/tags/network=ca_on_county), and there 
may be consumers who expect this.