OBV is a set of dynamic monitoring system displaying vehicle blind spots of A-pillar without changing the vehicle frame. The entire system includes flexible displays installed on A-pillars; front and back cameras of the electronic rear view mirror; an eye tracker. When connecting to the camera of electronic rear view mirror and eye tracker installed in the front above the driver, the system not only tracks the driver's line of sight to adjust the front side views of the vehicle, but displays the views on the flexible displays installed on A-pillars inside the car to fix driver’s blind spots.