The crashes that changed Formula One

    Updated 1309 GMT (2109 HKT) August 30, 2018

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    Fernando Alonso's spectacular crash at Sunday's Belgian Grand Prix reignited the debate around driver safety, specifically the new "halo." Built around the cockpit to protect drivers from debris, it appeared to come to the rescue of Charles Leclerc as Alonso's airborne car bounced off it and over him.