What should you do if you see a vehicle with its hazard lights on?

You answered correctly by selecting "I reduce my speed" and "I ready myself for hazards occurring suddenly."

According to German traffic rules, when you see a vehicle with its hazard lights on, it is a warning sign that there may be a dangerous situation ahead or that the vehicle itself could present an obstacle. You should slow down and be especially alert for sudden hazards, as the situation may require you to react quickly. Simply continuing as before would not be safe, as the hazard lights are meant to catch your attention and signal caution. Always reduce your speed and prepare for any unusual circumstances on the road. This approach ensures the safety of all road users.