In today’s world, Automation is a very important part of the invention. This paper focuses on safety of loaded vehicles from the rollover, side wind, overturn etc. Presently trailer tracking by using GPS, collision mitigation technologies are used. These technologies have some limitations and are overcomes by using stm32f407 microcontroller, servo valve &hydraulic system and it gives better performance and reliability. This system continuously monitors the load on each load cell and observe the elevation of the truck trailer using the accelerometer sensor. The existing load on trailer get display on LCD screen. If an overload condition is observed, a visual and audible alarm will continuously beep. Overload message will be displayed on load screen. While monitoring the load and elevation of truck trailer center of gravity will calculate. If the center of gravity changes then servo motor will operate on hydraulic cylinder and maintain it in safe zone.

Keywords : Hydraulic System, Microcontroller, Relay, Servomotor, Accelerometer.