Peter Miller <[email protected]> writes: > I have been looking at the coverage of maxspeed limit data for > highways in the UK and we seem to have a right mix of styles. > > Here is the data for bug chunk of England while avoiding including > anything from France or Ireland (which would include km/hour figure). > We current have over 17,000 highway ways tagged with maxspeed and also > 300 ways tagged as 'maxspeed:mph'. You will notice that for 30 miles > per hour we have 30, 30mph, 30 mph, 48.2, 48.28, 48.280, 48.27808, > 48.28032 and 48.28. > > Any suggestion on what we should recommend for the UK? I guess the USA > should also be party to this discussion but they have far less > population of the maxspeed field (only 70 uses in the Bay area) so > possibly we should come to a view first. Our options seem to be:- > maxspeed=30mph (the user should strip a trailing mph to find the value) > maxspeed=30 (leaving it for the user to realise that it is in the UK > and therefore imperial) > maxspeed=30 mph (the user should strip the last word if it is mph > including the space) > maxspeed:mph=30 (Easy for the user) > maxspeed=48.28 (with a defined precision) For metric use no work by > the user, for imperial use a look-up table is required or a conversion > and rounding
This question is already answered on the OSM wiki: http://wiki.openstreetmap.org/wiki/Key:maxspeed The answer is that maxspeed=30mph is the recommended answer if the native units are mph. -- Andrew. ---------------------------------------------------------------------- Andrew M. Bishop [email protected] http://www.gedanken.demon.co.uk/ _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
