Traffic Light Signal Diagram - Red, Yellow, Green Meaning and Function #1887848 (License: Personal Use)

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

Used on transportation safety pages, driver education materials, traffic engineering resources, and municipal websites. Matches user intent for understanding traffic rules, preparing for driving tests, or designing road infrastructure visuals.