How many hours is the permissible daily driving time if you are driving a truck with a gross vehicle weight rating of 6 t for the commercial transport of goods?

For drivers of trucks with a gross vehicle weight rating over 3.5 tons, as in this question, German and EU driving time regulations apply. The daily driving time is limited to 9 hours. However, you are allowed to extend the daily driving time to 10 hours on up to two days within a week. This is to ensure the safety of the driver and other road users by preventing over-fatigue. Selecting "9 hours, with 10 hours also permitted twice a week" is correct. Remember that 10 hours is not allowed every day, and three 10-hour days per week are also not permitted—only twice per week is allowed. This rule helps you stay compliant with the law and promotes road safety when operating a truck commercially.