Hi Andrew,

Thanks for your feedback.
I've edited the changeset and uploaded it:

https://www.openstreetmap.org/changeset/67040007

Regards,
David Wales

On 9/2/19 5:02 pm, Andrew Harvey wrote:
> I'm not sure I follow your example, but...
> 
> The rule of thumb is to only split the way when there is a physical
> barrier preventing moving from one lane to the other.
> 
> As for Key:lanes, according to
> https://wiki.openstreetmap.org/wiki/Key:lanes it's only for marked
> lanes, but Microsoft has been adding many Key:lanes even when
> unmarked, though there's a bit of discussion about this
> https://wiki.openstreetmap.org/wiki/Talk:Key:lanes.
> 
> On Fri, 8 Feb 2019 at 08:41, Graeme Fitzpatrick <graemefi...@gmail.com> wrote:
>>
>> So what is considered "best practice" when it comes to lanes - physical or 
>> theoretical markings?
>>
>> Situation: you have a two-lane, one-way, primary road with an exit coming up.
>>
>> Your road is marked as highway=primary, one_way=yes, lanes=2
>>
>> Should you map in an actual, physical lane splitting off to the left along 
>> the curve of the exit ramp, marked as =primary_link, lanes=1; or change the 
>> =primary to lanes=3, turn:lanes=slight_left|none|none?
>>
>> I'll openly admit that I add extra physical lanes because I think it "looks" 
>> better that way & makes more sense to follow a "real" road on the map, 
>> rather than just be told "turn slightly left".
>>
>> Thanks
>>
>> Graeme

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