[Talk-GB] Speed limits

Andy Robinson Andy_J_Robinson at blueyonder.co.uk
Thu Sep 20 11:09:07 BST 2007

Richard Fairhurst wrote:
>Sent: 20 September 2007 10:48 AM
>To: talk-gb at openstreetmap.org
>Subject: Re: [Talk-GB] Speed limits
>Dave Stubbs wrote:
>> I came across a speed limit in Windsor Great Park a few weeks back for
>> 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.

Point taken. maxspeed=30mph or maxspeed=60km/h does it in one, or should
that be kmph do you think.



Andy Robinson
Andy_J_Robinson at blueyonder.co.uk

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