Traffic Light Signal Diagram - Red, Yellow, Green Indicators Explained #1841158 (License: Personal Use)

This image depicts a standard vertical traffic light assembly with three circular lamps: red on top, amber (yellow) in the middle, and green at the bottom. Though in real-world operation only one light is active at a time (except during transitions), this illustration shows all three illuminated to clearly represent the full signal set. The housing is black with visors to reduce glare and improve visibility in daylight.

Used in driver’s education materials, transportation safety websites, traffic regulation guides, and municipal signage documentation. Matches user intent for understanding traffic signal meanings, studying road rules, or designing UI elements for navigation apps.