In the US 911 districts spend a lot of money creating rural addresses for their emergency dispatch systems.
Over the past few years I've worked with several districts implementing tools that assign addresses to "structures" based on a distance along a linear feature (e.g. a road). With the adoption of 911, rural addresses based on postal route and box numbers have been converted to a street and house (or structure) number. This can be complicated.
I've been told by these agencies that they are following procedures prescribed by NENA.
I searched for mention of What3Words in the final report from NENA's National Address Database Summit, but found nothing. (Perhaps being sponsored by the Department of Transportation steers them toward road oriented addressing systems.)
At first glance it appears W3W might be easier to maintain than systems relying on linear features.
Has anyone used What3Words for 911 rural addressing in the US?
If so, please post a link to a whitepaper describing how it was done.