Driving time is what the tachograph records while the vehicle moves. Regulation 561/2006 caps it at 9 hours a day, extendable to 10 hours twice a week; 56 hours a week; and 90 hours in two consecutive weeks (art. 6).
Every 4.5 hours a 45-minute break is due (art. 7), and between shifts comes the daily rest (art. 8). These limits apply to vehicles over 3.5 t in the EU, the EEA and Switzerland; outside, the AETR applies.
When quoting a haul, work the distance against these limits rather than map speed: Barcelona to Hamburg is not one day. The driving-hours tool does that arithmetic for you.
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