Peter wrote: > Any suggestion on what we should recommend for the UK?
Either of: maxspeed=30mph (the user should strip a trailing mph to find the value) maxspeed=30 mph (the user should strip the last word if it is mph including the space) The maplint validation uses a regular expression which validates either as OK. But: 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 No. As you can see there are so many arbitrary conversions in the figures you quoted and the best to use would be those signposted for foreign drivers at ports (which round to 5km/h, downwards I think). I think those are also in the highway code somewhere. But if we did this you wouldn't know whether maxspeed=50 was for mph or km/h. The wiki page for the maxspeed tag says (or did the last time I looked) that the default units are km/h, but other units should be stated explicitly. It used to say it had to be a number in km/h which has led to the mess of tagging in the UK which was ignored by the majority anyway (perhaps they don't read the wiki?) and added mph anyway. I'll admit that I also sometimes use maxspeed=national as there was some talk of the government redefining these limits from their current 70/60/30 values to reduce road fatalities, and if that were to happen I'd hate to have to go around trying to find out which roads tagged as 60 needed changing to 50. I didn't realise others were using variations on NSL/nsl I'll confess now that I helped with the maplint validation changes to support the already widely used mph suffix. I think the imperial heights/widths/lengths of 12'0" format is still an ongoing task (since last October), as it doesn't fall into the "Number with optional Unit" standard test format of a number followed by one of a list of units. Map Features links the "NumWithUnit" types (currently lengths/widths/heights/speeds) to this page: http://wiki.openstreetmap.org/wiki/Map_Features/Units Ed _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
