I have recently got into mapping traffic signs and speed limits where I can, but I realised I don’t know what to do when mapping differing speed limit signs that are offset from each other. It’s a transition from a 50km/h zone to a 60km/h zone but the signs are offset by 65m, making a sort of “no-mans land” in-between. I plan to map it with the in-between zone tagged with separate maxspeed:forward and maxspeed:backward tags. I assume it should be done this way because as a driver on the ground I would follow the speed limit signs on my side of the road as I passed them, having no knowledge of the reverse sign.

I guess I’m wondering if this is a logical way to map this?

  • 0day@programming.devEnglish
    1·
    28 days ago

    Interesting. I just found this instruction. I’m guessing you already did too. (Source)

    For speed limits depending on the way direction, see maxspeed:forward=*.

    So I would say, map that section of road with forward/backward speeds. Also, the signs should be independent nodes.

    The position of the actual speed limit signs can be added as nodes beside the road/railway/waterway