What is the function of the lane departure warning system in a Vauxhall Grandland?

I am thinking of purchasing a Vauxhall Grandland and came across the lane departure warning system feature. Can you explain what it does and how it works?

The lane departure warning system in a Vauxhall Grandland uses cameras to monitor the lane markings on the road. It will alert you if you start to drift out of your lane without using your turn signal.

This feature is great for preventing accidents caused by distracted driving or drowsiness. It provides an extra layer of safety while driving.

If you're someone who often drives long distances or on busy highways, I would highly recommend opting for a Grandland with this feature.