Traffic Light Signals Explained - Red, Yellow, Green Meaning & Usage #3315087 (License: Personal Use)

The image displays three vertically aligned traffic signal units side by side against a clean white background. Each unit features the standard trio of circular lamps: the left shows red illuminated (stop), the middle shows amber/yellow lit (caution or prepare to stop), and the right shows green active (proceed with caution). The lights have realistic lens textures and subtle metallic housing, emphasizing clarity and universal recognition.

This image is commonly used in driver’s education materials, road safety websites, traffic regulation guides, and municipal signage documentation. It serves users seeking to understand basic traffic signal meanings, often matching search intent for “traffic light colors meaning” or “how traffic lights work.”