On traffic lights it means slow down.
white
A green object would appear dark or almost black under yellow light. This is because yellow light consists of wavelengths that are primarily in the yellow part of the spectrum, and it does not contain much green light. Therefore, the green object would not reflect much light back to our eyes, resulting in its dark appearance.
Mixing red and yellow light together will create light orange.
Blue and yellow light combine to create white light. This is because blue and yellow are complementary colors that, when mixed together, cover the entire visible spectrum.
It's called "A Blue Object" because when light of many colors falls on it, it reflects the blue light toward your eyes and absorbs all the other colors, including yellow. So if yellow light is the only light falling on it, the light is all absorbed, none is reflected to your eyes, and the object appears black.
Yellow porch lights are bug lights. By bug light I mean they are not supposed to attract bugs as bad as regular light bulbs.
A flashing yellow signal light means proceed with caution.
The wiiconnect24 is on.
A yellow light when driving means to slow down and prepare to stop before the light turns red.
The yellow *traffic* light means to slow down and get ready to stop because it is about to turn to the red light.
its on stand-by
Without know what the warning light say's, all I can tell you in Yellow means caution.
A yellow traffic light means to slow down or stop completely. When the light is yellow it is about to change to red in a few seconds. Contrary to popular belief by many drivers yellow does not mean speed up.
nice video on the yellow light hope it helps. http://www.youtube.com/watch?v=zn89z_VUcP0
Proceed with caution.
it means that the power to it is on
Check your tires!