Final answer:
A 'stale green' light refers to a traffic light that has been green for a while, not one you saw turn green, so the answer is false.
Step-by-step explanation:
The question 'A "stale green" light is one that you saw turn green' is false. In driving terminology, a 'stale green' light refers to a traffic light that has been green for an unknown period of time and is likely to turn yellow soon. Drivers should be cautious when approaching such a light as it might change at any moment. This question falls under the subject of driver education, which can be related to the physics of light and perception.
The term 'stale green' refers to the phenomenon known as a negative afterimage, where after staring at a green dot for a long period and then shifting your gaze to a blank white screen, you will see a lingering image of the dot in a complementary color. This is due to the fatigue of the green-sensitive cone cells in your eyes, which take some time to recover from the stimulation of green light.