The type dimension of Automotive Parking Aid System segmentation distinguishes four principal sensor families: ultrasonic, radar, camera‑based, and LiDAR/hybrid solutions. Ultrasonic units dominate low‑cost vehicle lines, offering short‑range detection (0.2‑5 m) and accounting for roughly 40 % of total unit shipments due to their simplicity and legacy integration. Radar modules extend detection to 30 m, support velocity vectoring, and capture about 25 % of market volume, particularly in mid‑tier models that require higher reliability under adverse weather. Camera‑based systems, leveraging computer‑vision algorithms, contribute 20 % of the market, driven by OEMs seeking visual overlays for driver assistance and future autonomous functions. LiDAR and hybrid configurations, though cost‑intensive, represent the remaining 15 % and are concentrated in premium and experimental platforms where three‑dimensional mapping is essential. Collectively, these sub‑types define the overall market size by allocating revenue and R&D resources according to performance requirements, cost constraints, and integration pathways within the broader Automotive Parking Aid System market.