System for informing distance between cars

PURPOSE: A system for informing distance between cars is provided to help a driver to recognize a vehicle in front of him by using a light source having high brightness. CONSTITUTION: In a system for informing distance between cars, a visibility meter(300) measures a visibility distance on the road. A light bar turns on a light source. The light source is turned on when an adjacent vehicle is detected. A main control unit(100) receives the visibility distance from the visibility meter. A main controller determines whether mist occurs. The main control unit transmits the information of mist to the light bar.