ADS-L Digest - 18 Sep 2005 to 19 Sep 2005 (#2005-263)

[James Smith]

I've never seen an example of the first-described
jug-handle turn, but I can visualize how it would
function, although IMO not as well as the one I
described because it still requires a left turn.

To complicate matters, Utah DOT is contemplating what
they call a "continuous flow intersection", which - if
I understand the description in the SLTribune - moves
the left-turning traffic across the oncoming lanes
before the intersection, into a storage lane on the
far-left side of the roadway, to the left of oncoming
traffic.  Sounds like an invitation to catastrophe to
me, but I'm no traffic engineer.  Anyone familiar with
this type of left-turn arrangement?


--- "Joel S. Berson" <Berson at ATT.NET> wrote:

> We now have two conflicting descriptions of a "jug
> handle" turn.  In
> the earlier, one pulled off to the right *before*
> the intersection,
> and turned *left*:
>  > I thought a "jug handle turn" was where, if you
> wanted to turn
>  > left, you first
>  > got into the rightmost lane, and then exited into
> a small-radius pull-off
>  > that directed you directly leftward to your
> original direction, usually
>  > with a traffic light or other signal.  This way,
> you crossed at a
>  > right angle
>  > to your original direction of travel, and once
> across your
>  > lane(s), you could
>  > proceed straight ahead (making what would have
> been a left turn), or could
>  > turn left from there (making what would have been
> a U-turn).
>
>
> At 9/21/2005 09:39 AM, James Smith wrote:
> >A jug-handle turn is a mini
> >off-ramp, a structure built as part of the road
> >system: you go through the intersection, turn RIGHT
> >into the "jug handle" and keep turning right
> through
> >270 degrees, ending up on the desired street and
> >heading the same direction as though having made a
> >left turn. You still need to cross the road you
> >started from, but there is usually a traffic light
> to
> >facilitate that.
>




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