Traffic Light Signal Diagram - Red, Yellow, Green Sequence Explained #1234812 (License: Personal Use)

This vector illustration depicts a conventional vertical traffic signal used worldwide, with the red light at the top indicating stop, yellow in the middle signaling caution or impending change, and green at the bottom authorizing movement. The design features realistic shading and lens highlights to simulate real-world visibility under daylight or night conditions. It's ideal for educational, governmental, or transportation safety materials.

Used on driver’s education websites, traffic safety guides, municipal transportation pages, and traffic engineering resources; serves users seeking visual reference for signal meanings or regulatory compliance.