Which light is typically found either at the bottom or on the right?

Answer: C — Green

In traffic signal systems, green lights have a specific function and placement. The green light indicates that it is safe to proceed, whether for vehicles or pedestrians, and is usually positioned at the bottom of the traffic signal when using a vertical arrangement or to the right in a horizontal arrangement. This placement is established by traffic engineering standards to ensure clarity and consistency in signaling. The bottom position for the green light enables drivers to easily recognize when they can go, reducing confusion as it is distinct from the other lights that signify different actions (such as stopping or preparing to stop). The context within which the green light operates reinforces its importance; it signals the continuation of movement in traffic, which is critical for maintaining the flow on roads. Understanding the positioning of the green light can help drivers navigate traffic signals confidently.