When a vehicle is parked, only dash cams with parking mode recording will continue to record. Some of these dash cams will not only have impact detection, but also motion detection.
The impact detection in parking mode works the same as when the car is parked and motion detection does what it sounds like - recording will trigger when there is movement detected.
For example, if someone walks by your vehicle, the built-in video sensor will detect movement and start recording. Footage that are recorded this will be marked as motion and also be stored in a separate video folder for the same reason:
- Easily located in the video folder
- Protected from being overwritten
Keep in mind that the motion sensitivity, while adjustable, remains sensitive as the dash cam would rather record something than potentially miss out on important footage.