The present invention relates to a blind spot alert system designed for alerting vehicles approaching from multiple directions. The system includes a housing mounted at a strategic location, equipped with a comprehensive sensor sub-system. This sub-system includes Passive Infrared (PIR) sensors to detect thermal radiation of animate entities, Light Detection and Ranging (LIDAR) sensors to measure vectored distances of surrounding objects, Ultrasonic sensors for non-vectored distance measurement, and Doppler speed measurement sensors to capture vehicle velocity and trajectory. A microcontroller processes the data from these sensors, analyses it to detect potential threats, and generates appropriate warning signals. These warning signals are transmitted to an indicator sub-system that provides visual or audible alerts to the approaching vehicles. Additionally, the system includes a server that receives and stores the analyzed data for further processing or record-keeping.