Final answer:
The clues that might indicate that you are approaching a stale green light are increased pedestrian activity, diminished traffic flow, and flashing yellow lights.
Step-by-step explanation:
The clues that might indicate that you are approaching a stale green light are:
- Increased pedestrian activity: If you notice more pedestrians crossing the intersection or waiting at the crosswalk, it could be an indication that the light may turn yellow or red soon. Pedestrians tend to gather when they anticipate a signal change.
- Diminished traffic flow: If you observe a decrease in the number of vehicles passing through the intersection, it could suggest that the light might change soon. When traffic slows down or stops, it's a sign that the light might turn yellow or red.
- Flashing yellow lights: Some traffic lights have a feature where they flash yellow before turning red. If you see a flashing yellow light, it indicates that the signal might change soon, so you should prepare to stop.
Therefore, the correct answer is d) All of the above - all the clues mentioned above might indicate that you are approaching a stale green light.