Type segmentation of the Blind Spot Information System (BLIS) market distinguishes four primary architectures: camera‑based, radar‑based, sensor‑fusion (camera + radar), and lidar‑enhanced systems. Camera‑based BLIS leverages high‑resolution optical sensors to generate visual alerts, accounting for roughly 35% of global deployments due to lower component cost and ease of integration in new vehicle platforms. Radar‑based solutions, valued for robust performance under adverse weather, contribute about 25% of the market, especially in commercial fleets where durability is paramount. Sensor‑fusion architectures combine camera and radar data streams, delivering higher detection accuracy and reduced false‑positive rates; this hybrid approach currently captures approximately 30% of total BLIS installations, reflecting OEMs’ shift toward safety‑critical redundancy. Lidar‑enhanced BLIS, still emerging, represents the remaining 10%, driven by premium autonomous‑vehicle projects that require precise three‑dimensional mapping of blind‑spot zones. Collectively, these type categories shape the overall market size by dictating cost structures, integration complexity, and performance benchmarks across vehicle segments.