Symbol 0085 from ISO 7000 - Title/Meaning: Hazard warning Function/description: To Identify the control that activates all side markers and tail lights in a predetermined flashing pattern. To indicate the operational status of the hazard warning.
Application referenced in: ISO 6405-1, ISO 9687
Additional information: 
On road vehicles: 

simultaneous operation of either green turn signal tell-tales, or separate red signal
this symbol applies only to the control and to the separate red tell-tale
framed areas of this symbol may be solid.
Own work using: iso.org/obp/graphics/grs/7ac0645d-45b7-41d1-a718-e8253fc6b754 200.png
Vectorization:  Mrmw