You are overtaken by a police vehicle, which pulls in immediately in front of you. The words "BITTE FOLGEN" (PLEASE FOLLOW) appear illuminated in red on the roof. What should you do?

When a police vehicle signals for you to follow by displaying "BITTE FOLGEN" illuminated in red, it is crucial to comply with the instructions. Following the vehicle (choice 1) is necessary as the police may need to direct you to a safer location or to check your vehicle or documents.

Additionally, if the police vehicle stops, you must also stop your vehicle (choice 2) to comply with their request. This is important for safety and legal reasons, as failing to stop could lead to further enforcement action.

It is not necessary to leave your engine running once you have stopped (choice 3), and doing so may not be advisable depending on the situation. For instance, turning off your engine might be expected if you're stopped for an extended period or if instructed by the police.

Understanding and following these commands ensure your safety and adherence to traffic laws in Germany.