[Talk-us] Naming Ramps

[Martijn van Exel]

We (the Telenav OSM team) have been tagging ramps consistently with
destination= to displace the limited exit_to= on the junction node
(think exit_to:left and exit_to:right mess). The destination= value
would reflect whatever is on the exit sign, and may be supported by
destination:ref if the exit sign would include a route shield, or even
destination:ref:to in cases where the exit sign indicates a connection
to another numbered route further afield
(http://taginfo.openstreetmap.org/keys/destination%3Aref%3Ato#map).
Martijn van Exel
skype: mvexel


On Fri, Jul 31, 2015 at 2:51 AM, Minh Nguyen
<minh at nguyen.cincinnati.oh.us> wrote:
> On 2015-07-30 13:51, Paul Norman wrote:
>>
>> On 7/30/2015 7:15 AM, Brett Lord-Castillo wrote:
>>>
>>> Related to this, I also wanted to look for some ideas on how to
>>> generate names for the unnamed ramps in an OSM extract.
>>
>> Most ramps in parts of the US I've traveled don't have name. What they
>> do have is destinations, which indicate the information on the signs.
>
>
> Incidentally, the Ohio Department of Transportation does post a blue sign on
> every highway ramp, bearing a heavily abbreviated (devowelized, actually)
> name of the ramp, for example:
>
> Ramp
> E 275
>  To
> N 75
>
> or:
>
>   Ramp
>   E 275
>    To
> Lvldmdra
>
> In cases where the ramp belongs to multiplexed routes, you may see multiple
> ramp name signs side by side: <http://www.roadfan.com/3bluemrk.JPG>
>
> These signs are specifically intended to help motorists pinpoint their
> location when calling for help. (If emergency responders look for the wrong
> ramp in a given junction, they might end up wasting precious minutes trying
> to circle back.)
>
> I've been hesitant to put these names in the `name` tag because they clutter
> up ordinary use cases like map display and navigation. I'm inclined to use
> `official_name` here and expand all abbreviations (per OSM convention).
>
> --
> minh at nguyen.cincinnati.oh.us
>
>
>
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