Navigation system (1) for a motor vehicle (10), wherein the navigation system (1) is designed to: - to provide an activatable navigation mode for navigating the motor vehicle (10) within an urban area (S1); - to determine a route within the city area (S2) in activated navigation mode, avoiding route sections outside of the city's main roads; and - to control (S3) an output device (2) of the motor vehicle (10) to suggest a specific route in the activated navigation mode; characterized in that - the route sections to be avoided include roads along schools and / or kindergartens within specified time windows.