Traffic Light Signal Diagram - Red, Yellow, Green Lights Explained #1888578 (License: Personal Use)

This image depicts a standard vertical traffic signal used globally at road intersections to regulate vehicle and pedestrian movement. The top red light indicates stop, the middle amber/yellow light signals preparation to stop or proceed with caution, and the bottom green light authorizes movement. The black housing and visors reduce glare for better visibility in daylight.

Used on transportation safety pages, driver’s education materials, municipal traffic guides, and urban planning resources; matches user intent for understanding traffic control basics or visual reference for signage design.