This is the Sygnalizacja świetlna icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
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.