Some new traffic lights have been installed nearby. There is a Turn Right
On approaching you see either the red / amber / green for ahead and right
if clear - or the Green Right Filter for Right.
Some have been assuming that the green signifies clear for ahead or right.
It occurred to me that we need an Amber Filter. Easily achieved with LEDS.
If Amber the turn if safe - otherwise wait.
What do others think?
On Thu, 11 Jan 2018 20:01:12 GMT, Harry Bloomfield wrote:
If it's a round green light, it means what all round green lights
mean, proceed if it safe to do so, be that going ahead, turning left
A green up pointing arrow means proceed if safe to do so, ahead only.
A green right pointing arrow means proceed if safe to do so, right
A green left point arrow means proceed if safe to do so, left turn
Largely because most people spend most of the time looking at their
speedos and the road furnitire to make sure they aren't breaking the
law, and no time looking at the road cinditions or other vehicles or
pedestrians to make sure they arent breaking the car :-)(
No Apple devices were knowingly used in the preparation of this post.
Quite. I moved off on a left filter the other day and the back cab
alongside me decided that meant he could go straight on. And hit a car who
who had the green with them.
He was probably more interested in his phone than driving. Like so many
these days. Although at least hadn't straddled the two lanes making it
impossible to use the filter.
It's odd the way people drive down the road with their right hand wheels
as close to the middle of the road marking at all times. Except at lights
where lanes are marked. Only then do they move over to the left to block
*I'm not a paranoid, deranged millionaire. Dammit, I'm a billionaire.
Dave Plowman email@example.com London SW
To be fair, I have more than once seen lights where a single round green
light *does* indicate priority to turn right, usually where all or
nearly all the traffic is turning right into a major road and straight
on is either an obviously minor road or non-existent. I do think this
is bad and misleading design (they should use arrow-shaped multiple
green lights) and I, when a stranger to the area, usually annoy traffic
behind by pausing to try and work out what is happening. An example
where bad design in one place can cause accidents elsewhere which are
very unlikely to be attributed to the original bad design.
That the amber filter would add confusion.
It's perfectly OK to turn right on green without the filter if there's
no oncoming traffic.
If there is oncoming traffic it will be stopped before the filter is lit.
They don't need to, if they see there's no oncoming traffic they turn
right as at any other junction with "normal" traffic lights, when the
filter lights then they know they should have right of way (if they're
sensible will still use caution).
Use of eyes. It is still physically present - just unlit.
How do these people cope with normal (no filter) traffic lights then?
Most traffic lights do not have a right filter indicator but where there
is one you can assume that red is probably being displayed to the
oncoming traffic but you still have to decide if they are actually going
to stop. I have had one delivery van overtake standing traffic to go
straight from the right turn only lane right across my right turn filter
path. It was that near miss incident that convinced me to get a dashcam.
Where I think there is scope for sorting out a convention is whether the
right filter should occur at the start or end of the main green phase.
Argument in favour of start on a two lane road is that then both lanes
can go straight across rather than leaving the outer one deadlocked by
turning traffic stuck due to opposing traffic flow. At busy times the
right turn only lane is never long enough. Snag is that opposing traffic
sees someone move forward and goes for it against their red light.
A580 is particularly bad since the engineers seem to have tossed a coin
to decide whether right filter is before or after green at each lights.
There have been some criticisms of recent led lights around these parts as
it seems that the angle they can be seen from is a little too narrow since
Not being a driver, I'd not know how feasible your idea is.
This newsgroup posting comes to you directly from...
When traffic light designers want people to know that they have priority
turning right as soon as the lights turn green they usually have a
permanent right filter arrow come on at the same time as the round main
green light. (And sometimes a left arrow as well if there is a left
turn lane.) People who assume that a green light otherwise unqualified
gives them priority turning right should not be driving a car on the
public road. No special signal will help people who are this ignorant.
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