On 26/01/2020 14:54:40, ARW wrote:
On 26/01/2020 10:56, polygonum_on_google wrote:
On Sunday, 26 January 2020 10:45:19 UTC, AndrewÂ* wrote:
On 25/01/2020 15:40, Jimk wrote:
Andrew Wrote in message:
On 23/01/2020 21:58, Jimk wrote:
"Rod Speed" Wrote in message:


"polygonum_on_google" wrote in message
...
On Thursday, 23 January 2020 12:04:20 UTC, Jim GM4DHJ ...Â* wrote:
Is it OK for rear fog lights to go off when the ignition is turned
off?....

Anyone ever fully understood why we only have one high intensity
rear fog
lamp?

Presumably so it isnt easily confused with a car coming towards you.



rear fogs are red you dumb **** !


Not if you are Red/Green colour blind.


Er no they are still red.


Are you sure ?.

I thought old fashioned traffic lights also had the
word STOP in black so that colour-blind people would know
that the red light was showing ?.

I think that the colours are defined in terms of wavelength(s) so they
really are red even if some individuals cannot perceive that as
different to greenÂ* (or whatever).


Japan uses an almost blue colour not green for go. The colour is
actually defined as green by international standards.

Cyan, a mixture of green and blue sounds eminently sensible. It would
overcome the most common red/green colour blindness.

Having said that, I recall a friend saying they had difficulty in
differentiating between old yellow sodium street lamps and red lights!