[Talk-us] Best practice in Lane Editing 3

Eric Ladner eric.ladner at gmail.com
Thu Jul 13 20:23:13 UTC 2017


yeah, I agree..  just prodding thought.

On Thu, Jul 13, 2017 at 3:21 PM Tod Fitch <tod at fitchdesign.com> wrote:

> 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> 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>
>> 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:
>>
>>    1. 42.4479327, -83.0484338
>>
>> <image001.jpg>    <image002.jpg>
>>
>>    1. 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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