The vehicles ahead of you are driving at about 30 km/h. Why are you not permitted to overtake before the road bend?

In the scenario presented, you should not overtake before the road bend for two key reasons outlined in the correct answer.

1. **Overtaking Distance:** The vehicles ahead are traveling at about 30 km/h, and overtaking requires sufficient distance to safely complete the maneuver. Given the bend in the road, visibility may be limited, making it difficult to assess whether the road is clear.

2. **Potential for Other Vehicles:** The presence of a nearby car (the red one) indicates it might pull out to overtake as well. This increases the risk of a collision if you attempt to overtake simultaneously.

According to German traffic rules, overtaking is only allowed when it is safe, and both of these factors highlight why it's prohibited in this situation. Understanding these rules helps ensure safety on the roads.