Although eight drivers, including Carlos Sainz, were looked at by the stewards for using DRS under yellow flags in Brazil, Michael Masi says they did 'significantly slow'. Valtteri Bottas retired from the Brazilian Grand Prix on lap 53, parking his W10 on the side of the track. That brought out waved yellow flags. According to the rules, drivers have to slow down when they enter the area of the yellow flag with eight drivers, including Sainz, looked at for not doing so. Some of them, Masi says, even activated their DRS for a 'relatively short period of time' before slowing down. 'The overriding factor with double yellow flags is the requirement to slow and significantly slow,' he explained...
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