Traffic Light Signal Diagram - Red, Yellow, Green Indicators Explained #3578834 (License: Personal Use)

This image shows a standard vertical traffic light assembly with three circular lamps-red on top, amber (yellow) in the middle, and green at the bottom-encased in a gray metal housing. Each lens is convex and illuminated, indicating active signal states; the design follows international conventions for road traffic control. The housing includes mounting brackets on either side for pole attachment.

Used in transportation safety materials, driver’s manuals, traffic engineering documentation, educational websites, and municipal signage guides. Matches user intent for understanding traffic rules, visual identification of signals, or illustrating road infrastructure.