[Tagging] [Talk-us] Freeway exit tagging

Paul Johnson baloo at ursamundi.org
Mon Aug 29 20:25:58 UTC 2016


I've given it a little minor tag-completion update if anybody wants to
compare notes.

On Mon, Aug 29, 2016 at 11:00 AM, Duane Gearhart <duane at mapzen.com> wrote:

> FYI - the exit 78 interchange information has been updated. The Mapzen
> directions are calling out the exit as you expected
> http://www.openstreetmap.org/directions?engine=mapzen_car&
> route=31.67026%2C-83.61169%3B31.66674%2C-83.61442#map=18/
> 31.66803/-83.61124
>
>
> On Fri, Aug 26, 2016 at 12:06 AM, David Mease <meased3 at gmail.com> wrote:
>
>> My interpretation:
>>
>> What is the proper method to use turn:lanes to tag freeway lanes
>>>> approaching an exit, where the exit branches directly from an edge lane
>>>> without being part of the freeway itself, but the freeway lanes are not
>>>> signed with an arrow, such as this one?
>>>>  http://mapillary.com/map/im/7igAGXSa6EsUYlTIujXchw
>>>>
>>>
>> This exit has no turn lane. There is no staging lane prior to the exit
>> where tags could be placed, one should not be created just so that there is
>> a place to put tags. This freeway should not be split. You said yourself
>> that the exit is not part of the freeway itself, so tags should not be
>> placed on the freeway. This intersection is a candidate for the destination
>> tag.
>>
>>
>>> mapping the road markings seems extremely strange - what if they are
>>> very faded, when do we map them ? is there a threshold of % of the paint
>>> left ?
>>>
>> what is there are no road markings but there are signs ?
>>>
>>
>> Same difference. But the arrow in the above example is pointing to where
>> the exit is, not describing a turn lane preceding the exit.
>>
>>
>>> do we remove those tags during the winter in some regions ?
>>>
>>
>> Do we remove the name tag from roads when the street signs get iced over
>> or overgrown with vegetation?
>>
>> mapping of markings separately also seems to have no functional benefit.
>>> the information should be useful for navigation
>>
>>
>> Road markings are both beneficial and useful for navigation. Cities and
>> governments have paid a lot of money installing them all over globe
>> precisely for these reasons. OSM would be well served to include them
>> exactly as is. I don't hear a lot of people complaining about how those
>> arrows on the roads led them astray.
>>
>> In the above example, I would not expect navigation software to direct me
>> to get into the lane marked with a slight right arrow. In fact, I would be
>> miffed when I found there was no such lane. All I would expect is a simple
>> "In x distance take exit 78 towards Sycamore/Ocilla"
>>
>>
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>>
>>
>
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