You’re driving on a motorway and have to slow down suddenly due to a hazard ahead. How can you warn drivers behind of the hazard?

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You're driving on a motorway and have to slow down suddenly due to a hazard ahead. How can you warn drivers behind of the hazard?

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Using your hazard warning lights, as well as your brake lights, will give the traffic behind an extra warning of the problem ahead. Only use them for long enough for your warning to be seen.