[Tagging] Maxspeed

[Simone Saviolo]

2015-05-11 1:41 GMT+02:00 Andrew MacKinnon <andrewpmk at gmail.com>:

> How do you tag speed limits on curves and highway on/off ramps? At
> least in Ontario, these speed limits are advisory only and signed with
> a yellow sign (and sometimes on curves you will see a curve speed
> limit sign and a higher general speed limit sign right beside each
> other). I have used ramp_speed and curve_speed for this and taginfo
> suggests that maxspeed:advised, maxspeed:advisory, recommended_speed
> might be ways to tag this. See
> http://www.mapillary.com/map/im/nGxJnKpP2dootXNmp2eV_g for a typical
> example of a ramp speed limit in Ottawa, Ontario (this one is 60km/h).
>

I agree with Ross, that a new tag should be used. The sign you talk about
is not related to maxspeed.

Here in Italy, for example, this is achieved through square signs with a
blue background, which qualifies them as "information" signs. Instead, max
speed is indicated by round signs with a white background and a red border,
which means they are "prescription" signs.

Also how do you tag maxspeed which is unsigned? In Ontario the default
> speed limit is 50km/h in urban areas and 80km/h in rural areas when
> not signed. However, there have been proposals to lower the lower
> speed limit from 50km/h to 40km/h. I have been using maxspeed=national
> for this, is there a better way to tag this?


In Italy we've been using something like

maxspeed=50; source:maxspeed=IT:urban
maxspeed=90; source:maxspeed=IT:rural

Ciao,

Simone
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