[talk-au] Editing speed limit in Australia

Graeme Fitzpatrick graemefitz1 at gmail.com
Wed Feb 27 22:19:13 UTC 2019


Hi Lacri

On Wed, 27 Feb 2019 at 21:56, Lacramioara Maghiar - (p) <
lacramioara.maghiar at telenav.com> wrote:

> Hi all,
>
>
>
> I’m writing you regarding the speed limit mapping in Australia.
>
> Specifically, how would you add the speed limit on a motorway link where
> the speed limit sign appears in the field towards the end/in the middle of
> the link?
>

In Qld at least (& I think Aust-wide) speed limits officially change at the
sign - you may start accelerating as you pass it, not before; but you must
start slowing early so you're at the lower limit as you pass the sign.


> Please take a look at the following example:
> https://www.openstreetmap.org/way/37282555. Here, there is a speed limit
> sign of 100 (SL100 hereafter) in the middle of the motorway link. You can
> see the sign here:
> https://www.mapillary.com/app/?focus=photo&pKey=cTDOkTXf0M0gVBjem4mt9A&lat=-27.664412022684786&lng=152.7436576757009&z=17.
>
>
> In which way would you add the speed limit information in the
> above-mentioned case:
>
>    1. maxspeed=80 until the SL100 sign and maxspeed=100 until the end of
>    the link?
>
> I'm not sure where you got 80 from? I can only see a 60 sign at the start
of the link
https://www.mapillary.com/app/?lat=-27.663581886206885&lng=152.73979205152136&z=17&x=0.49548370263958935&y=0.50767663189853&zoom=0&pKey=B-1LcWLyCAjIQqhNjTQ7AQ,
& speed then jumps to 100 just before merging out onto the Cunningham
Highway


>
>    1. maxspeed=80 represents the speed limit of the trunk way from which
>    the motorway link leaves.
>
> Welcome to Australian roads! Just because it's a trunk road, doesn't
necessarily mean it's got an appropriate speed limit :-(


>
>    1. nothing until the SL100 sign but maxspeed=100 starting with the
>    appearance of the sign in the field?
>
> 60, not "nothing" between the 2 signs, then 100.

Hope that helps!

Thanks

Graeme
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