[talk-au] Tagging for the router

Ian Sergeant inas66+osm at gmail.com
Thu Sep 1 00:53:46 UTC 2016


Hi,

I'd suggest the easiest solution is just to change the wiki.

Ian.

On 1 September 2016 at 09:37, Nick Hocking <nick.hocking at gmail.com> wrote:

> "My suggestion is that the map data is the best place to store that
> information."
>
> Actually - the wiki page is very specific on this.
>
> "When a particular turn restriction is *the default* for a given
> jurisdiction *and* is *not signed* *don't map them*. It is much better to
> ensure that routing engines embody the regional rule rather than mapping
> every occurrence as a turn restriction."
>
>
> Ok so how do we "ensure that routing engines embody the regional rule:?
>
> E-mailing their support address and asking them to study the road rules
> for every jurisdiction in the world is not going to cut it. So maybe the
> only way is to name and shame them in a public forum somewhere, but where?
>
>
> I don't think that there is a routing engine out there that won't suggest
> crazy +90 degree turns on a high speed road.
>
>
>
> Probably, the only solution is to advise users to always check the "don't
> allow u-turns" box on their navigators.
>
> Also - how do we map a signed "U turn permitted" at traffic lights where
> the default is "not permitted"?
>
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>
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