This is the 2440th most frequent German word.
rettungswagen
Ambulance.
Here, 'Rettungswagen' is used as the subject of the sentence, indicating the vehicle ('ambulance') designed for medical emergencies.
Der Rettungswagen kam schnell an die Unfallstelle.
The ambulance arrived quickly at the accident site.
In this sentence, 'Rettungswagen' is part of a possessive phrase ('Sirene des Rettungswagens'), showing ownership or association of the siren with the ambulance.
Die Sirene des Rettungswagens war weithin hörbar.
The siren of the ambulance was audible from far away.
'Rettungswagen' is used in the dative form ('dem Rettungswagen') as the object of the verb 'folgten,' indicating the ambulance being followed.