This icon is a part of a collection of Sygnalizacja świetlna flat icons produced by Icons8. Icons follow the guidelines of iOS, Windows, and Android and are designed by a single designer, guaranteeing the consistent quality. Both PNG and vector are available.
This traffic light logo is an upright rectangle with four round corners, and three circles stacked on top of one another horizontally. Upon each side of the rectangle, there are 3 right-angle triangles with one side touching the rectangle, and the slope of the triangles are facing downwards. These triangles are supposed to be overhangs which blocks glare from the sun on the traffic light.