[Talk-GB] Speed limits
Richard Fairhurst
richard at systemeD.net
Thu Sep 20 10:48:20 BST 2007
Dave Stubbs wrote:
> I came across a speed limit in Windsor Great Park a few weeks back for 38mph
> which is a little odd... I'm not going to encode that as maxspeed=61.1 as
> that would seem silly.
There are signs on a few canals in Leicestershire which say, in a nice
little red circle, "6.43 km/h". I kid you not.
The Environment Agency did it the sensible way. When they introduced a
speed limit on the Thames, they purposefully chose 5mph because it'd
be easy to sign as 8km/h if that was ever required.
Anyway, back to the point, I'm not sure about the point of using
"maxspeed_units" as a separate tag - it's adding an extra point of
failure (what if the tag's removed? what if a client sees one tag and
ignores the other?) and it's more of a faff to edit. Most importantly,
it's another thing to remember - OSM tagging is difficult enough for
the beginner without expanding the vocabulary needlessly.
cheers
Richard
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