Traffic Light Signal Diagram - Red, Yellow, Green Indicators Explained #1841142 (License: Personal Use)

This illustration depicts a standard three-light traffic signal with red (top), yellow (middle), and green (bottom) lamps housed in a dark green casing with side visors. The yellow light is illuminated, signaling an upcoming change to red, while the red and green lights remain off. Each lens features a grid pattern, suggesting a reflective or textured surface for enhanced visibility.

Used on transportation safety websites, driver’s education materials, traffic regulation guides, and municipal infrastructure pages; serves users seeking to understand signal meanings or design standards.