[Tagging] Dispute prevention: meaning of lanes tag

Martin Vonwald imagic.osm at gmail.com
Sun Apr 29 10:41:05 BST 2012

Those examples are very good. Any chance we could get some
license-compatible photos in the near future?

2012/4/21 Philip Barnes <phil at trigpoint.me.uk>:
> On Sat, 2012-04-21 at 10:19 +0200, Ronnie Soak wrote:
>> I would only use a lanes value other than 2 if there are clear road
>> markings, signs or it is otherwise very clear that two cars are
>> supposed to go in one direction at a time (>=3)
> I am not aware of any special signage on 3 lane roads in the UK. It is
> just a knowledge of the highway code that gives you the rules.
>        1. Solid double lines on your side mean do not cross, traffic in
>        the opposite direction has solo use of the centre lane.
>        Also broken line on your side and solid double lines on the
>        other side mean your direction has exclusive use of the centre
>        lane.
>        2. Broken and solid line on your side, traffic in the opposite
>        direction has priority use of centre lane but you can overtake
>        if it is clear and nobody is signalling their intent to pull
>        out. Usually uphill traffic will have priority in this case.
>        3. Both sides have a broken line and have equal priority to use
>        the centre lane to overtake. Have not seen one of these for
>        years.
>        However OSM does not allow anything other than tagging as 3
>        lanes, so the above is probably irrelevant to OSM tagging.
>> or there is no way for two cars to pass without a special (signed)
>> passing place (1).
> There is always a way. There are lots of single track minor roads, that
> have no passing places and high hedges close to the road. Passing can
> involve a long reverse and squeeze into a gateway or pull onto any bit
> of grass verge that may be there.
> Official passing places are also supposed to be used to allow faster
> traffic to pass, a rule many city dwellers are totally unaware of, much
> to the annoyance of locals. I can remember a public information film, in
> the 70s http://www.youtube.com/watch?v=BQZownCGnYg
> Phil
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