On Fri, 24 May 2019 at 21:00, Mateusz Konieczny <[email protected]> wrote:
> > 24 May 2019, 21:52 by [email protected]: > > Have you ever seen a crossing with lights AND zebra stripes? > > This is a very popular situation in Poland. > I knew there'd be at least one. :) Motorists have right of way if their signal is green; pedestrians have > absolute > right of way just by stepping on the crossing irrespective of the lights. > Does not compute. > > Note that legal implications of zebra stripes differ vastly across the > world. > OK, so let me ask this. Do zebra stripes on their own have any legal significance? Can you have zebra stripes without lights or are they only ever present with lights? If you can have zebra stripes without lights that mean something different to zebra stripes with lights, that could be a problem for the blind. But if you can that complicates matters a lot. And still means that making markings and lights orthogonal is a bad idea if the markings have two different meanings depending on whether or not lights are present. Because then we need to ensure we distinguish between "these zebra stripes mean pedestrians have priority" and "these zebra stripes do not mean pedestrians have priority" to avoid potential mistagging. If zebras only occur in Poland with lights then it's just a crossing=traffic_lights. And yes, that would raise problems for people mapping from aerial imagery if the stripes can have different meanings. -- Paul -- Paul
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