Can the second driver be on tacograph break when the first driver isdriving?

Yes, the second driver can take a break while the first driver is driving, provided that the vehicle is equipped with a tachograph and the regulations allow for it. However, the second driver must be correctly recorded on the tachograph during their driving period and adhere to the rest periods mandated by driving regulations. It's essential to follow the specific rules of the country or region regarding driving hours and breaks.