When should you use your hazard lights?

• A. You've had to stop quickly because you've come upon slow moving traffic and there's a chance another vehicle might not see you and run into the back of you
• B. You're reversing from a driveway and your view isn't clear
• C. Your vehicle is a temporary hazard, e.g. you've broken down or have a flat tyre
• D. You've parked on a broken yellow line to pick something up