[Talk-us] Fwd: [OSM-newbies] Roundabout direction

[Bill Ricker]

should have cc'd talk-us  before i hit send ...

On Fri, Jul 10, 2009 at 2:49 AM, Jens Müller<blog at tessarakt.de> wrote:
> On 02.07.2009 16:09, Peter Childs wrote:
>>> You don't need a "oneway" tag :
>>> > http://wiki.openstreetmap.org/wiki/Tag:junction%3Droundabout
>>> >
>>> > This is implied by the tag "junction=roundabout" itself (if it is not
>>> > oneway, then it is not a roundabout).
>>> >
>> That is not 100% true.
>> http://en.wikipedia.org/wiki/Magic_Roundabout_(Hemel_Hempstead)
>
> That's not one roundabout, that's a collection of several ones.

that's the difference between technical tagging and common usage. For
a motorist, it is one junction of roadways, to a mapper, it is
multiple roundabout  junctions of oneway=no links or if divided paired
oneway=yes links.

Of the four UK Magic Roundabouts, one  http://osm.org/go/eus_enMmc--
needs some love, there are no mini-roundabouts marked.

So on the four magic roundabouts, who has right of way? In the US,
most states give right of way to traffic in or leaving the roundabout
(or 'rotary' as we say), but some states in their wisdom were
heterodox, which makes a roundabout spanning the iirc VA MD border
treacherous as the rules change every half revolution. But there is a
tendency in some designs for drivers on what the feel is the thru road
to assume THEY have right of way irregardless, which appears to be the
intent of the engineers here http://osm.org/go/ZfIvvIBi7-- which has a
circular island with statue, but we instead of the usual YIELD sign
for entering traffic, we have STOP signs
herehttp://osm.org/go/ZfIvh2N4Y--  to prevent thru traffic sailing
thru to the detriment or circulation and pedestrians,

Are there any known Magic Roundabouts outside the UK? Wikipedia only
lists 4 in UK.

--
Bill in Boston
n1vux at arrl.net bill.n1vux at gmail.com