[Talk-us] Best practice in Lane Editing 3

[Tod Fitch]

At least one routing app I have been using seems to use the turn:lane tagging [1] convention shown on the wiki. That allows the route guidance to let you know you should be getting into the turn lane at an appropriate time. Not sure if the change:lanes [2] tagging is being followed but it does allow for showing that crossing the solid line is not legal. Between turn:lanes and change:lanes, I don’t see the need to have a separate way that doesn’t really exist.

[1] https://wiki.openstreetmap.org/wiki/Key:turn
[2] https://wiki.openstreetmap.org/wiki/Proposed_features/change

> On Jul 13, 2017, at 1:14 PM, Eric Ladner <eric.ladner at gmail.com> wrote:
> 
> Just to play Devil's advocate:  B is probably more TECHNICALLY correct since a solid white line indicates "lane change discouraged, but not illegal" and you'd probably want the routing software to indicate where the turn lane starts, not 200 feet later (esp. in heavy traffic and the lane's already full of cars).  
> 
> Whether it's practical to map it like that or not is another matter.
> 
> On Thu, Jul 13, 2017 at 9:40 AM Tod Fitch <tod at fitchdesign.com <mailto:tod at fitchdesign.com>> wrote:
> Case 1: First example is much closer to how I would tag it based on the the rule that it should not be a separate way if it is only separated by paint.
> 
> Case 2: I would not expect the two paths to be considered safe or legal where I live in the US (not in Michigan). While there is some effort at coordinating traffic laws between states, ultimately it is up to the state to define their own rules so it might vary from state to state.
> 
> 
>> On Jul 13, 2017, at 12:15 AM, Horea Meleg <horea.meleg at telenav.com <mailto:horea.meleg at telenav.com>> wrote:
>> 
> 
>> Hello all,
>> 
>> Me and my Telenav colleagues are editing lane numbers in Detroit area. We have two cases, where any opinion would be appreciated.
>> 
>> Case 1 
>> 
>> We are editing lanes and turn lanes and we came across with those 2 situations:
>> 
>> 42.4479327, -83.0484338
> 
>> <image001.jpg>    <image002.jpg>
>> 42.2826283, -83.3683861
>> <image003.jpg>   <image004.jpg>
> 
>>  
>> 
>> Which road geometry do you think is correct edited? The links are edited different even that, according to Bing aerial imagery they should be edited in the same way. Also, in these situations, each road geometry causes a different lane and turn lane tagging. 
>> 
>> Case 2
>> 
>> We have this situation:
>> 
>> 42.6515832, -83.1619915
>> 
> 
>> <image005.jpg>
> 
>>  
>> 
>> According to US driving rules, are those turns allowed? Are you allowed to go on the link if you are coming from South?
>> 
>>  
>> 
>> Thank you,
>> 
>> Horea 
>> 

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