Final answer:
In vertically hung traffic signals, the colors are arranged with red at the top, yellow in the middle, and green at the bottom.
Step-by-step explanation:
When traffic signals are hung vertically, the color order from top to bottom is red, yellow (amber), and green. This standard order helps drivers understand the status of the intersection without confusion. The top position is the red light, which tells drivers to stop. The middle position holds the yellow light, which warns drivers that the light is about to change to red and indicates that they should prepare to stop if it is safe to do so. Lastly, the green light at the bottom signals that it’s safe to go if the intersection is clear.