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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
Posted to uk.d-i-y,uk.rec.cycling
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Blue railway signals?
On Mon, 17 Dec 2018 01:10:52 -0000, Rod Speed wrote:
"Kristy Ogilvie" wrote in message news On Sun, 16 Dec 2018 15:39:40 -0000, Steve Walker wrote: On 16/12/2018 15:00, Max Demian wrote: On 16/12/2018 13:33, Kristy Ogilvie wrote: On Sun, 16 Dec 2018 12:37:49 -0000, newshound wrote: On 14/12/2018 18:22, Fred Johnson wrote: People with colour blindness shouldn't drive trains (or cars for that matter). And it's not very many, in fact I know of only one person who's colourblind. You may not know *of* many but I bet you know quite a lot. It's about 8% of men, although many of them do not realise that, or discover it until tested later in life. I think you'd notice when you saw all the traffic light bulbs looking identical. You're not safe to drive if you can't tell red from green. I suspect they don't look *identical*, just not as distinct as to someone with normal colour vision. They would use the position to confirm which is which. Correct. Which is why colour-blindness is not even notifiable to the DVLA. Driving a train is of course totally different as braking needs to be commenced way earlier and the position of the light cannot be determined at that point. I'm not colour blind, and I don't look directly at the traffic lights. I see red or green out of the corner of my eye and act accordingly. If they suddenly became the same or very similar colours, That isnt what happens with most colorblind people. And its never suddenly with any of them, they are born with it. I'd make mistakes regularly. Yes, some colorblind people do, but its normally only with trivial stuff like not being able to pick matching sox or less frequently wearing contrasting colors that don't really go together that only normally sighted people notice. Are you saying a colour blind person already knows to look carefully at things? The microscopic subset of people that can't distinguish between red and green do if fact use which of the column of lights is lit instead of the color. Which means they aren't paying as much attention to the rest of the road in front of them as properly sighted folk do. |
#2
Posted to uk.d-i-y,uk.rec.cycling
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Blue railway signals?
"William Gothberg" "William wrote in message news On Mon, 17 Dec 2018 01:10:52 -0000, Rod Speed wrote: "Kristy Ogilvie" wrote in message news On Sun, 16 Dec 2018 15:39:40 -0000, Steve Walker wrote: On 16/12/2018 15:00, Max Demian wrote: On 16/12/2018 13:33, Kristy Ogilvie wrote: On Sun, 16 Dec 2018 12:37:49 -0000, newshound wrote: On 14/12/2018 18:22, Fred Johnson wrote: People with colour blindness shouldn't drive trains (or cars for that matter). And it's not very many, in fact I know of only one person who's colourblind. You may not know *of* many but I bet you know quite a lot. It's about 8% of men, although many of them do not realise that, or discover it until tested later in life. I think you'd notice when you saw all the traffic light bulbs looking identical. You're not safe to drive if you can't tell red from green. I suspect they don't look *identical*, just not as distinct as to someone with normal colour vision. They would use the position to confirm which is which. Correct. Which is why colour-blindness is not even notifiable to the DVLA. Driving a train is of course totally different as braking needs to be commenced way earlier and the position of the light cannot be determined at that point. I'm not colour blind, and I don't look directly at the traffic lights. I see red or green out of the corner of my eye and act accordingly. If they suddenly became the same or very similar colours, That isnt what happens with most colorblind people. And its never suddenly with any of them, they are born with it. I'd make mistakes regularly. Yes, some colorblind people do, but its normally only with trivial stuff like not being able to pick matching sox or less frequently wearing contrasting colors that don't really go together that only normally sighted people notice. Are you saying a colour blind person already knows to look carefully at things? The microscopic subset of people that can't distinguish between red and green do in fact use which of the column of lights is lit instead of the color. Which means they aren't paying as much attention to the rest of the road in front of them as properly sighted folk do. And they still don't run into anyone or run over anyone. |
#3
Posted to uk.d-i-y,uk.rec.cycling
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Lonely Psychotic Senile Ozzie Troll Alert! LOL
On Wed, 19 Dec 2018 07:48:43 +1100, cantankerous trolling geezer Rot Speed,
the auto-contradicting senile sociopath, blabbered, again: And they still don't run into anyone or run over anyone. And you still can't get the unwashed Scottish ******'s cock out of your toothless senile gob, Rot! BG -- about senile Rot Speed: "This is like having a conversation with someone with brain damage." MID: |
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