What must you be prepared for in this situation?

Your answer is correct. In this situation, you must expect both an uneven and dirty roadway as well as workers and construction equipment on the roadway. Construction zones in Germany are usually marked by warning signs that alert drivers to changes in the road surface and the presence of workers and machinery. It's important to reduce your speed, stay alert, and be prepared for unexpected obstacles. You do not need to expect police regulating traffic unless a specific sign indicates their presence. Understanding these signs helps you drive more safely and predict the possible dangers in construction zones.