While you are travelling on the autobahn, your passengers tell you there is smoke in the bus. What must you do?

Your selected combination is correct because, in situations where there is smoke in the vehicle, safety is the top priority. According to German traffic laws, specifically StVO (Road Traffic Regulations), it is essential to stop the vehicle safely and secure it. Stopping on the hard shoulder prevents any further danger to yourself and your passengers, and ensuring everyone is at a safe distance from the bus and the autobahn further protects them from potential hazards, such as fire or explosions.

The options you chose are necessary for effectively managing such an emergency, ensuring the safety of all individuals involved. Driving to the next petrol station, as mentioned in option three, can lead to dangerous outcomes, including putting yourself and your passengers at risk by remaining in the vehicle while it could potentially catch fire. Therefore, stopping immediately and moving to a safe location is the appropriate and legally mandated course of action.