[OSM-talk] What's the policy on unsurveyed roads from imagery?

[John Smith]

2009/12/29 Steve Bennett <stevagewp at gmail.com>:
> What's so important about traffic_calming tags? True, they will affect
> accurate trip time planning, but is that it?

He's assuming it's a objective way to map residential streets, main
through fares generally don't have traffic calming devices.

However that doesn't always hold water here since those ways might be
the main shopping area of small towns, so you need to distinguish them
from alternative routes as well. I don't think this can be completely
tagged in an objective manner like that simply because some streets
that are now less important for traffic are still very important for
pedestrian traffic and where pedestrians want to drive to before they
become pedestrians.