Illustration of a vehicle demonstrating active safety features.

Lane Departure Warning

Lane Keeping technologies are designed to prevent you from leaving your lane of travel.

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What is Lane Departure Warning?

Lane Departure Warning systems use cameras to tell if you’re drifting out of lane. It will alert you via a sound, visual display or vibration that your car is about to veer out of your lane. These systems are only a warning and you are still required to take action and steer back into the driving lane.

Why is Lane Departure Warning important?

Lane keeping technologies have the potential to reduce the impact of run-off-road and head on crash types by 21-86%.


Lane keep assist technologies must be able to detect the lane markings or road edge to determine if the car is leaving or has left the lane. If there are no visible line markings the technology may be able to detect the edge of the road and continue to function.

Lane keeping systems will not function on gravel roads and in snowy conditions where there are no visible line markings or a distinct road edge.