The NCA in cars refers to the Urban Intelligent Driving Navigation Assistance System, also known as Navigation Cruise Assist, which is an advanced intelligent driving assistance technology. It enables vehicles to automatically navigate along the route based on the destination input into the car's system, achieving autonomous driving from the starting point to the destination in specific urban environments.

Specifically, once the NCA function of the vehicle is activated, the driver only needs to set the destination, and the vehicle can autonomously complete most driving tasks, such as automatic following, lane changing, turning, etc., greatly reducing the burden of driving. The emergence of this technology indicates the development trend of autonomous driving in the future, especially its application potential in complex urban road conditions.

Currently, some car brands have begun to launch models equipped with the NCA system and have opened this feature in specific urban areas. As the technology continues to mature and regulations gradually improve, it can be foreseen that the urban NCA function will gradually become an important consideration factor for consumers when purchasing a car.

The principle of NCA (Navigation Cruise Assist) mainly relies on the collaborative work of several core components and technologies, including onboard sensors, control systems, navigation systems, and artificial intelligence algorithms. Onboard sensors are responsible for collecting information about the surrounding environment, the control system receives inputs from the sensors, the navigation system provides the vehicle with predefined routes and plans, and the artificial intelligence algorithm is the core of the NCA system.