[Talk-us] What is a dual carriageway?

Martijn van Exel m at rtijn.org
Sun Jan 15 17:45:39 GMT 2012

On Sun, Jan 15, 2012 at 10:31 AM, Hilton Long <seldomseen at scinternet.net>wrote:

>  SR9 in Hurricane UT, has either 4 or 5 lanes. Two in each direction and
> the fifth a turning lane, that occurs for part of the road.  Part of the
> road is limited access, but you can make a U turn on the part with 5 lanes,
> and there is grade access from intersecting streets.  The road is
> represented as two, two lane, one way streets for its entire length, but it
> has a FIXME tag that says “not a dual carriageway”.  ****
> ** **
> Should the 5 lane part, be shown as a single 5 lane road?****
> **

I only map two separate ways when there's a median you can't cross, so the
two directions are physically separate. By that rationale, it should be one
way feature. I am curious if other mappers use the same convention.

martijn van exel
geospatial omnivore
1109 1st ave #2
salt lake city, ut 84103
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