[OSM-talk-be] Lanes & turns from wich side you start to count?

Gerard Vanderveken Ghia at ghia.eu
Sun Nov 30 12:24:50 UTC 2014


Oops!
turn:lanes:backward=right|through;left
should be
turn:lanes:backward=right;through|left




Gerard Vanderveken wrote:

> Hi,
>
> It is simple:
> Look in the direction of the road= arrow (eg S>N)
> Observe lane from left to right.
> In Belgium on a common street with 2 directions, the left side is in 
> the reverse direction (eg 2 N>S) and the right side lanes goes in the 
> direction of the arrow (eg 3 S>N).
> So you have in the strait piece of the road:
>
> turn:lanes:backward=none|none
> turn:lanes:forward=none|none|none
> For the turning itself before a crossing you consider the direction of 
> the lane:
> eg N>S outside lane (1)  is for turning right and going through, 
> inside lane is for turning left (by crossing other 3 lanes)
>
> turn:lanes:backward=right|through;left
>
> In the forward direction (S>N) is eg a lane for every direction
>
> turn:lanes:forward=left|through|right
>
> The last and outside lane (5) is of course for turning right.
>
> Regards,
> Gerard
>
>
> Jakka wrote:
>
>> Hi,
>>
>> Reading en try to understand lanes and turns wiki's
>>
>> https://wiki.openstreetmap.org/wiki/Key:turn
>>
>> In Belgium right side driving how do I compose my value key of de lanes?
>>
>> I get confuse with the wiki images and explanations in it.
>> Not going in detail yet only the positions of lanes. For i go futher 
>> to understand the next wiki.
>>
>> OSM direction (arrows) south to north
>>
>> lanes=5
>> 2 north to south and 3 south to north nummerique counting from left 
>> to right 1,2,3,4,5
>>
>> so I split north to south thats something with backward
>> turn:lanes:backward 1|2
>> so I split south to north thats something with forward
>> turn:lanes:forward 3|4|5
>>
>> or is it from right to left?
>> 5|4|3|2|1??
>>
>> Or the lanes them self left to right or right to left.
>>
>> Sorry I am lost here
>>
>>
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>
>
>
>
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