Idea of Traffic Light Icon
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.
This Traffic Light icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.