Traffic Light Signals Explained - Red, Amber, Green Sequence #1841109 (License: Personal Use)

The image displays three identical vertical traffic light units, each with red (top), amber (middle), and green (bottom) lenses in a yellow housing. The left unit shows only the red light illuminated, the center shows amber lit, and the right shows green active-demonstrating the standard traffic signal sequence. Each lens has a textured surface to enhance visibility and reduce glare.

Used on transportation safety websites, driver’s manuals, traffic engineering pages, and educational content about road rules. Matches user intent for understanding signal meanings, preparing for driving tests, or designing traffic control systems.