Traffic Light Signal Diagram - Red, Yellow, Green Indicators Explained #253723 (License: Personal Use)

This image depicts a standard vertical traffic signal with three circular lamps: red on top, amber/yellow in the middle, and green at the bottom, all lit simultaneously for illustrative purposes. The housing is black with reflective side visors to enhance visibility, and each lens has a glossy finish indicating modern LED or incandescent illumination. Though real-world signals never show all three lit at once, this representation is commonly used in educational materials to demonstrate signal components.

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