The Lane Departure Warning (LDW) is an active safety technology designed to alert drivers when the vehicle unintentionally drifts out of its lane, thereby reducing the risk of accidents by prompting timely corrective action. The LDW system typically uses a camera or radar sensor mounted on the windshield to continuously monitor lane markings (e.g., dashed or solid lines). When the system detects an unintended lane departure without the turn signal activated, it immediately triggers alerts via auditory warnings, steering wheel vibrations, or dashboard visual cues.