What applies here?

In the scenario depicted, traffic rules are in play that require a careful response based on the presence of a police officer directing traffic.

1. **Crossing the crossroads**: If it's indicated that you may cross, it's vital to make sure there are no additional restrictions or signals that must be adhered to first, such as waiting for the police officer's further instructions.

2. **Waiting for signals**: Should the police officer give further signals, you must follow their direction before proceeding into the intersection. This is critical to ensure pedestrian and vehicle safety.

3. **Prohibitions on turning**: If there are restrictions on turning, such as signs or the direction of traffic, awareness of these elements is crucial to maintain proper traffic flow.

It's important to consider all relevant options to ensure compliance with traffic regulations and to keep the roads safe. Each part of the answer contributes to a comprehensive understanding of how to navigate such scenarios correctly.