You are transporting logs. The driving route means you have to drive along poor quality roads. What do you have to do?

Your selected options are correct together because they emphasize the importance of load security and adaptation to road conditions, which are crucial in ensuring safety during transportation. According to German traffic regulations, specifically the Road Traffic Regulations (StVO), drivers are responsible for ensuring that loads are secure and do not pose a hazard to themselves or other road users.

Regularly checking the load's security helps prevent accidents caused by shifting cargo, while adapting your speed to the carriageway and load is necessary to maintain control, especially on poor quality roads.

The third option, which involves minimizing frictional forces between logs, is also relevant in ensuring that the load remains stable and does not shift, but it may not be as directly necessary in this context as the other two choices. Therefore, it's essential to consider all aspects to comply fully with safety regulations during transportation.