Speed limit in miles per hour?
  • Vote Up0Vote Down apmonapmon
    Hello,

    I was using Navigator Free in the US and noticed that it doesn't show speed limits as it does in e.g. Germany, even if they are entered correctly in OSM. Given that speed limits are in miles per hour in the US, how do these get shown? Do the different speed units get correctly converted? Is there anything else that needs to be considered?

    Thanks
  • 7 Comments sorted by
  • Vote Up0Vote Down tomastomas
    go to Settings/Unit system
  • Vote Up0Vote Down apmonapmon
    I have tried both "Metric" and "US" settings. In neither was the speed limit shown. 
  • Vote Up0Vote Down mdxmdx
    Can you give me exact example I could check? (coordinate or way id)
    thanks
       Martin
  • Vote Up0Vote Down apmonapmon
    It seems any road that is tagged with a maxspeed in miles per hour would be an example. But two random specific ones are:

    1) Commercial Road in London, UK (OSM way: 3640469)
    2) Flagstaff Road in Colorado, USA (OSM way: 17021692)


  • Vote Up0Vote Down mdxmdx
    Hi apmon,
    thanks - you are right:
            if 'maxspeed' in attr and attr['maxspeed'].isdigit() and int(attr['maxspeed']) < 250:
              maxSpeed = int(attr['maxspeed'])
    we will fix that
       Martin
    p.s. from your example I see that the space is probably not mandatory?
    (http://wiki.openstreetmap.org/wiki/DE:Map_Features/Units#Speed ... Das Leerzeichen zwischen Wert und Einheit fehlt.)

  • Vote Up0Vote Down apmonapmon
    maxspeed is unfortunately one of those tags where people are a little inconsistent, so there are a number of different versions of non-numeric values. By far the most frequent is "maxspeed=XX mph" but without blank is common too and some people use things like "maxspeed=30 km/h".

    Furthermore, there are values like "maxspeed=RO:urban" or "RU:rural" which indicates that the default urban or rural speedlimits of a country apply, although that tagging has always been considered rather controversial.

    A list of values and there frequency of use can be found on tagingo: http://taginfo.openstreetmap.org/keys/maxspeed#values
  • Vote Up0Vote Down mdxmdx
    OK, thanks
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