[OSM-newbies] Highway Types and Speed Limits

[Stefan Monnier]

> When I'm tagging say, a residential street, should I also be tagging the
> 30mph speed limit that the residential street implies (at least in the UK)
> or should I only tag if the street has a non-standard speed limit such as 20
> or 40mph?

I think the rule should be something like:
- if the road has no speed-limit sign, then it's wrong to tag it with
  the default speed limit for this kind of road.
- if the road has a speed-limit sign and it's different from the default
  spped limit for this kind of road, then it should ideally be tagged.
- if the road has a speed-limit sign and it's the same as the default
  speed limit for this kind of road (i.e. that limit could be guessed
  even if the sign wasn't there), then it's good to tag it, but it's not
  that important.


        Stefan