Under what circumstances may you cross a junction during a red light?

Your answer was correct because you selected the two valid circumstances for crossing a junction during a red light according to German traffic laws.

1. When you give way to an emergency vehicle (like police, ambulance, or fire services) that is using its blue light and siren, you are allowed to cross the junction. This is crucial for ensuring emergency services can respond quickly to incidents.

2. When a police officer is present and directing traffic, they can override standard traffic signals. Following their instructions is necessary for maintaining order and safety at the junction.

Selecting both of these options is important as it highlights the specific circumstances under which traffic regulations can be adjusted for public safety. While option 3 indicates there's never a situation to cross a red light, it does not reflect the exceptions provided for emergency situations and police direction. Understanding these rules can help ensure safe driving practices while also aiding emergency responders in their vital work.