If I cannot see the difference between red and green, then I will have quite a bit of trouble driving a car—I will mis-perceive the state of traffic lights!
Unless they are conveniently arranged in a set way, which you may memorize, such as left to right/bottom to top = red, yellow, green.
Lest anyone get the idea that the parent comment is being ignored merely because it’s “pedantic” or “misses the point” or some such, I want to point out that it’s also mistaken.
This fascinating and engrossing document is Part 4 of the Manual of Uniform Traffic Control Devices for Streets and Highways (a.k.a. “MUTCD”), published by the Federal Highway Administration (a division of the United States Department of Transportation).
Page 468 of the MUTCD (p. 36 in the PDF) contains this diagram:
And page 469 of the MUTCD (p. 37 in the PDF) contains this diagram:
Note that the iconography is the same and the orientation and arrangement is the same. But the colors are different!
For another example, take a look at MUTCD p. 487 vs. p. 488 (PDF pp.55–56).
In summary, it is not possible to reliably determine the colors of traffic control signals from their positions in a traffic light arrangement.
Unless they are conveniently arranged in a set way, which you may memorize, such as left to right/bottom to top = red, yellow, green.
Lest anyone get the idea that the parent comment is being ignored merely because it’s “pedantic” or “misses the point” or some such, I want to point out that it’s also mistaken.
This fascinating and engrossing document is Part 4 of the Manual of Uniform Traffic Control Devices for Streets and Highways (a.k.a. “MUTCD”), published by the Federal Highway Administration (a division of the United States Department of Transportation).
Page 468 of the MUTCD (p. 36 in the PDF) contains this diagram:
And page 469 of the MUTCD (p. 37 in the PDF) contains this diagram:
Note that the iconography is the same and the orientation and arrangement is the same. But the colors are different!
For another example, take a look at MUTCD p. 487 vs. p. 488 (PDF pp.55–56).
In summary, it is not possible to reliably determine the colors of traffic control signals from their positions in a traffic light arrangement.