Comment: "With Lane Keeping Assist, a

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"With Lane Keeping Assist, a

"With Lane Keeping Assist, a special camera watches the markings on the pavement as you drive. If it senses that you're drifting out of your lane, it vibrates the steering wheel. And with either system, advanced active technology can apply the brakes on one side of the vehicle, to help guide you back into your own lane."

or into a tree...

http://www.mbusa.com/mercedes/benz/safety#module-4