When should a driver use their hazard warning lights?

When the brake lights are not working.
When the vehicle has broken down.
When about to pull in and stop.
When parking for a short time on a single yellow line.

Explantion: Use the hazard warning lights to warn other road users of a danger ahead. For example, if a driver’s vehicle has broken down and is stopped on the hard shoulder, they should use the vehicle’s hazard warning lights to warn other road users of their presence.

Theory Tester

When should a driver use their hazard warning lights?

Legal Matters/Rules of the Road