[Talk-GB] Speed limits

[Andy Robinson]

Dave Stubbs wrote:
>Sent: 20 September 2007 11:04 AM
>To: Richard Fairhurst
>Cc: talk-gb at openstreetmap.org
>Subject: Re: [Talk-GB] Speed limits
>
snip
>
>Yeah, the vague point was that a something unable to parse mph, or xxx unit
>used in xxx country could then try and fall back to the km version if it's
>been entered explicitly.
>Personally I'd rather just stick mph on (and have been actually, for all
>the 2 roads I've ever added a speed limit to).
>I only suggested something else because the map features page explicitly
>says it's km/h. Although this could be altered to say it's /default/ is
>km/h if units are not supplied.

Map features originally assumed everything would be in SI units to give some
level of standardisation, but as time has gone on its clear that's not the
best way for users to make the most of it. So even an assumed default of
metric is not ideal when the units are missing. Much better perhaps to
understand where the feature is and be clever at interpreting what the value
means.

Cheers

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk