Lane departure warning is a safety feature in modern vehicles designed to alert drivers when they unintentionally drift out of their designated lane. This system uses cameras and sensors to monitor lane markings on the road. If the vehicle begins to veer without signaling, the system activates an alert, which can be a visual warning, sound, or vibration in the steering wheel. The primary goal of lane departure warning is to enhance road safety by reducing the risk of accidents caused by unintentional lane changes. It is especially useful during long drives or in situations where drivers may become distracted or fatigued.