You have the lane keep assist system activated in your motor vehicle. It emits a warning signal while you are driving. What could be the cause of this?

Your selected combination is correct because both situations can trigger the warning signal from the lane keep assist system.

1. Forgetting to use your indicator when changing lanes can lead to unintentional lane departures. Depending on the specific system, this might cause a warning since lane keep assist helps ensure safe lane changes.

2. Unintentionally departing from your lane directly activates the lane keep assist feature. This system is designed to help you stay within your lane, and when it detects that you have crossed the lane markings without signaling, it warns you.

In German traffic regulations, safe lane changes and maintaining lane discipline are crucial for road safety. Thus, understanding the system's alerts is key to enhancing driving safety and compliance with traffic laws.