Traffic Light Signal Diagram - Red, Yellow, Green Indicators Explained #1888580 (License: Personal Use)

This vector illustration depicts a standard vertical traffic signal used globally to regulate vehicular and pedestrian movement at intersections. The top red light indicates stop, the middle amber (yellow) light signals caution or impending change, and the bottom green light authorizes movement. Each lens is housed in a black casing with reflective side visors to enhance visibility in daylight.

Used on transportation safety pages, driver education materials, municipal traffic guides, and urban planning resources; matches user intent to understand traffic control devices or find illustrative assets for road safety content.