Traffic Light Signal Diagram - Red, Yellow, Green Lights Explained #256978 (License: Personal Use)

This image displays a standard vertical traffic signal with three circular lamps: red at the top, amber/yellow in the middle, and green at the bottom, each featuring a grid-patterned lens for enhanced visibility. The housing is matte black with side visors to reduce glare and improve signal recognition from multiple angles. It represents universal traffic control used globally to regulate vehicle and pedestrian movement at intersections.

Used on transportation safety pages, driver education resources, traffic engineering guides, and municipal signage documentation; matches user intent for understanding traffic signal meaning or designing road safety content.