[Talk-us] Should this be a dual carriageway?

Zontine, Chris -(p) chrisz at telenav.com
Thu Jan 8 20:13:01 UTC 2015


Thanks for the research. I will change the highway to trunk and leave as a single carriageway.


-----Original Message-----
From: Tod Fitch [mailto:tod at fitchdesign.com] 
Sent: Thursday, January 08, 2015 12:05 PM
To: Zontine, Chris -(p)
Cc: talk-us at openstreetmap.org
Subject: Re: [Talk-us] Should this be a dual carriageway?

And then from http://wiki.openstreetmap.org/wiki/United_States_roads_tagging#Trunk_tag there is "Most controlled-access highways without adequate speed or travel lanes or with obstructions should be designated highway=trunk. This designation applies, for example, to the two-lane Interstate 93 in northern New Hampshire"

Even if it is a dual carrageway, unless it has been rebuilt since the Bing imagery it only has one lane per direction which from the above quote would indicate trunk rather than motorway.


On Jan 8, 2015, at 11:51 AM, Zontine, Chris -(p) wrote:

> Regarding tagging highway=motorway or highway=trunk my take is the documentation is a bit ambiguous. I've posted the paragraph here. See 'In the less usual case ... along the same carriageway use a single way ...'.
>  
> I do not see a barrier using BING nor Mapbox Satellite.  However, TIGER 2014 shows as a dual carriageway. Umm ... what to do? Follow TIGER? Or remove the FIXME and do nothing more?
>                                           
> From the wiki:
> 'A motorway is normally represented by a series two parallel ways, one 
> for each carriageway tagged with highway=motorway. These ways should 
> all point direction of travel and be tagged with oneway=yes. In the 
> less usual case of a motorway where traffic travels in both directions 
> along the same carriageway use a single way and tag it with oneway=no. 
> '
>  
>  
> From: Tod Fitch [mailto:tod at fitchdesign.com]
> Sent: Thursday, January 08, 2015 10:43 AM
> To: Richard Welty
> Cc: talk-us at openstreetmap.org
> Subject: Re: [Talk-us] Should this be a dual carriageway?
>  
> From Bing I am wondering it is isn't a "super two" (limited access, two way road) which I think we've been tagging as highway=trunk.
>  
> If there is actually a barrier in the middle that is not visible in 
> Bing, then it should split into two separate one lane ways. Not sure 
> I'd hang a motorway tag on it though as that requires a minimum of two 
> lanes in each direction. 
> http://wiki.openstreetmap.org/wiki/Tag:highway%3Dmotorway
>  
> Tod
>  
> On Jan 8, 2015, at 10:36 AM, Richard Welty wrote:
> 
> 
> On 1/8/15 1:03 PM, Zontine, Chris -(p) wrote:
> While mapping a FIXME in the US this situation came up: WAY ID 8822153. The FIXME implies this WAY (and others) should have a dual carriageway. As you can see this is one long stretch of highway=motorway. What is the thought on this?
> it looks like it is divided by a barrier but single lane each way.
> it would be good to verify the presence of the barrier. i think a 
> motorway designation is borderline given the single lane, but a trunk 
> would be about right. given verification of the barrier, dual 
> carriageway would be correct.
> 
> richard
> 
> --
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