- Jul 19, 2019
- Reaction score
Portland OrangeAnd yet they say nothing about the blatantly racist red hand telling you to stop.
Back in the 90s, it took manufacturers probably 3 years longer to develop the LED ped signals because of the uniqueness of the "lunar white" color for the walk indication.
Yellow indications were a problem because of the measured intensity.
Circular logic. When the things were developed, they just stuck a piece of colored glass in front of a 63w lamp, 130w lamp for 12" heads.
When they started to develop LEDs, to determine the ITE specification for color and intensity, they simply measured existing indications.
So the yellow and walk measured significantly hotter than greed, red, and Portland orange.