The icon resembles a traffic cone with a rounded top instead of a sharp top. It has a slim rectangular base and looks like an upside-down cup. There are six short lines evenly spread out and emanating from the cone that are intended to give the impression that the siren is making noise or flashing.
This is a Siren 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 13,300 icons, all in the same style and quality.