Traffic Light Signal Diagram - Red, Yellow, Green Indications Explained #1908801 (License: Personal Use)

This illustration shows a conventional vertical traffic light assembly with three circular lamps: red at the top indicating stop, amber/yellow in the center signaling caution or impending change, and green at the bottom authorizing passage. The housing is black with side visors to reduce glare and improve visibility in daylight. The design follows international standards for road signage and traffic control.

Used on transportation, driver education, traffic regulation, and road safety web pages; matches user intent for understanding traffic signal meanings, studying driving rules, or illustrating traffic engineering concepts.