From: John on
Given that many roundabouts are now having traffic lights installed at the
approach roads - has anyone else nearly got caught out like me when
approaching a roundabout with a green light showing - only to realise at the
last moment that the green light is for a pedestrian crossing just a few
feet short of the roundabout?

Made me think - should there be a 'different' green signal for Ped X ings?
To reduce confusion with a normal green for Go.

Should there be a sensible min distance from roundabouts where there should
not be a Ped Xing? After all - one pedestrian can press the button and jam
the whole roundabout.


From: JNugent on
John wrote:
> Given that many roundabouts are now having traffic lights installed at the
> approach roads - has anyone else nearly got caught out like me when
> approaching a roundabout with a green light showing - only to realise at the
> last moment that the green light is for a pedestrian crossing just a few
> feet short of the roundabout?
>
> Made me think - should there be a 'different' green signal for Ped X ings?
> To reduce confusion with a normal green for Go.
>
> Should there be a sensible min distance from roundabouts where there should
> not be a Ped Xing? After all - one pedestrian can press the button and jam
> the whole roundabout.

There just shouldn't be traffic lights at roundabouts.
From: ChelseaTractorMan on
On Mon, 26 Apr 2010 16:07:35 +0100, JNugent
<JN(a)noparticularplacetogo.com> wrote:

>There just shouldn't be traffic lights at roundabouts.

an admission of failure really! There's a tiny roundabout near
Lakeside shopping centre, (Essex) with lights on all the (I think) 5
entries, they seem permanently switched off, I suspect because the
traffic flows better without them.
--
Mike. .. .
Gone beyond the ultimate driving machine.
From: Mortimer on
"ChelseaTractorMan" <mr.c.tractor(a)hotmail.co.uk> wrote in message
news:spcbt5lnro8c6cbjfkd9nikvvii7eucq8h(a)4ax.com...
> On Mon, 26 Apr 2010 16:07:35 +0100, JNugent
> <JN(a)noparticularplacetogo.com> wrote:
>
>>There just shouldn't be traffic lights at roundabouts.
>
> an admission of failure really! There's a tiny roundabout near
> Lakeside shopping centre, (Essex) with lights on all the (I think) 5
> entries, they seem permanently switched off, I suspect because the
> traffic flows better without them.

There was a lot of disruption last year while the Hopgrove roundabout near
York (A64 goes from dual-carriageway to single-carriageway and meets the
northern ring road) was modified. One of the changes was to put traffic
lights on the roundabout.

Throughput on the roundabout is worse than ever, with long queues on the
single and dual sections of the A64 and on the ring road, at peak times.

For some reason, the traffic lights are 24-hour, rather than peak periods
only. It is infuriating to have to wait at the roundabout for ages until the
lights change, when you are the only car around late at night!


The Milton Interchange roundabout under the A34 near Didcot was redesigned
and traffic lights were put on it. They have dramatically improved the
throughput of the roundabout - especially at peak periods when traffic used
to queue for ages to get out of the Milton Park business park onto the
roundabout. However the phasing of the lights is very poor: traffic coming
from Milton Park faces two sets of lights, very close together (one to enter
the roundabout, one to let traffic join from Didcot) and they are phased so
when one set of lights goes green, the next set turns red about five seconds
later. Often you get the lead car at the first lights doing a wheelspin
start to try to get through the second lights before it changes.

From: Ian Jackson on
In message <Ys2dnWruDNukIUjWnZ2dnUVZ8j-dnZ2d(a)brightview.co.uk>, Mortimer
<me(a)privacy.net> writes
>"ChelseaTractorMan" <mr.c.tractor(a)hotmail.co.uk> wrote in message
>news:spcbt5lnro8c6cbjfkd9nikvvii7eucq8h(a)4ax.com...
>> On Mon, 26 Apr 2010 16:07:35 +0100, JNugent
>> <JN(a)noparticularplacetogo.com> wrote:
>>
>>>There just shouldn't be traffic lights at roundabouts.
>>
>> an admission of failure really! There's a tiny roundabout near
>> Lakeside shopping centre, (Essex) with lights on all the (I think) 5
>> entries, they seem permanently switched off, I suspect because the
>> traffic flows better without them.
>
>There was a lot of disruption last year while the Hopgrove roundabout
>near York (A64 goes from dual-carriageway to single-carriageway and
>meets the northern ring road) was modified. One of the changes was to
>put traffic lights on the roundabout.
>
>Throughput on the roundabout is worse than ever, with long queues on
>the single and dual sections of the A64 and on the ring road, at peak
>times.
>
>For some reason, the traffic lights are 24-hour, rather than peak
>periods only. It is infuriating to have to wait at the roundabout for
>ages until the lights change, when you are the only car around late at
>night!
>
>
>The Milton Interchange roundabout under the A34 near Didcot was
>redesigned and traffic lights were put on it. They have dramatically
>improved the throughput of the roundabout - especially at peak periods
>when traffic used to queue for ages to get out of the Milton Park
>business park onto the roundabout. However the phasing of the lights is
>very poor: traffic coming from Milton Park faces two sets of lights,
>very close together (one to enter the roundabout, one to let traffic
>join from Didcot) and they are phased so when one set of lights goes
>green, the next set turns red about five seconds later. Often you get
>the lead car at the first lights doing a wheelspin start to try to get
>through the second lights before it changes.

On these large intersections, I hate the way that the phasing of the
lights forces you to 'ratchet' your way around the roundabout, from
traffic light to traffic light. Once you actually get onto the
roundabout, I would have thought that it would be more efficient if you
were allowed proceed through two (or even more) sets of lights.
--
Ian
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