Application segmentation of the Controller for Advanced Driver Assistance System market reflects the functional breadth of ADAS features deployed across vehicle classes. Collision avoidance systems, which integrate radar, lidar, and camera inputs to trigger emergency braking, represent the largest application segment, driving roughly 35% of controller demand due to regulatory mandates in major markets. Lane keeping assist, employing lane‑departure detection and steering torque modulation, accounts for about 30% of the market, as OEMs prioritize driver comfort and safety compliance. Adaptive cruise control, which maintains vehicle spacing through longitudinal speed control, contributes 25% of controller sales, benefiting from incremental upgrades in sensor resolution and algorithmic sophistication. Parking assistance, encompassing ultrasonic‑based proximity detection and automated steering, occupies the remaining 10%, reflecting its niche status in premium and urban‑focused models. This application‑focused breakdown underpins the overall market taxonomy and informs investment decisions across hardware and software development pipelines.