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

[Gerard Vanderveken]

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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