SEERU, short for “SEE Rear for U,” is a compact rear safety device that protects mobility riders from unseen hazards approaching from behind. Compatible with platforms such as bicycles and powered wheelchairs, SEERU enhances safety during daily commutes as well as unfamiliar travel. By integrating radar, camera, and taillight functions into a unified system, SEERU detects rear-approaching threats in real time and alerts users through sound, vibration, and visual cues—all customizable to personal preferences. This multi-sensor approach improves rear visibility, reduces cognitive load, and removes the need to look back, delivering greater peace of mind on the move. SEERU is especially valuable for seniors and those with hearing or mobility limitations, who face unique challenges in staying aware in mixed-traffic environments.