This is a Traffic Light icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,000 icons, all in the same style and quality.
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.
Related to Traffic Light Icon
Related icons are the icons with matching tags, as well as all transport icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors