[OSM-talk] prohibited manoeuvres

[A Morris]

Such a situation would occur when, to turn left, the vehicle would have to
cross multiple traffic lanes in a very short space, which would be
dangerous.

The road sign may be a custom sign, i.e. "No left turn into Acacia Avenue
from Station Road", or it could be conveyed by double white lines on the
road preventing the driver from changing lane, or "keep in lane" signs. Or
it may simply be a practical restriction rather than a legal one (these are
worth adding into the dataset it is known that a navigation system will be
able to find a better alternative).

AM


On 2/9/07, Lars Aronsson <lars at aronsson.se> wrote:
>
> A Morris wrote:
>
> > Hi Lars, I'm not quite sure what you are trying to say here? You can't
> just
> > take a set of mapped segments/ways and redraw them to your liking. If
> the
> > road layout happened to be as I drew it, then that's how it needs to be
> > recorded.
>
> You have to convince me that such a case actually exists, where
> two cars drive after each other in the same lane, but one is not
> allowed to turn left because it entered this lane from a different
> street than the other one.  I fail to see how such a traffic rule
> could be enforced.  What does the traffic sign look like, that
> informs the driver of this situation?
>
>
> --
>   Lars Aronsson ( lars at aronsson.se)
>   Aronsson Datateknik - http://aronsson.se
>
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