Vehicles used by the Feuerwehr Hannover (Hanover fire brigade, Lower Saxony, Germany) in an emergency medical service role.
Krankentransportwagen (KTW) – Ambulance
Rettungswagen (RTW) – Emergency Ambulance
Notarzteinsatzfahrzeug (NEF) – Emergency Doctor Car
Please note that these are scans from old 35mm slides in my archives, with resultant deterioration in colours and sharpness.