Traffic Light Signal Diagram - Red, Yellow, Green Lights Explained #3271778 (License: Personal Use)

This vector-style illustration depicts a standard vertical traffic signal with three circular lamps housed in a black casing, each flanked by reflective gray visors to reduce glare. The red light glows at the top, yellow (amber) in the center, and green at the bottom-though in real-world operation only one light is active at a time. The design emphasizes clarity and universal recognition for road safety applications.

Used on transportation safety websites, driver’s education materials, municipal traffic guides, and urban planning resources; matches user intent for understanding traffic signal meaning, regulations, or visual identification.