SATURDAY MAY 13 2017, 10:45 AM CLEAR, SUNNY SKIES, DRY ROAD. A VEHICLE THREE CARS AHEAD OF ME SUDDENLY STOPPED. THE OTHER VEHICLES IN FRONT OF ME SLAMMED ON THEIR BRAKES,AND WHEN I APPLIED MY BRAKES, NOTHING HAPPENED AND I ENDED UP RAMMING THE VEHICLE AHEAD OF ME. I WAS TRAVELING APPROXIMATELY 30 MPH, AND WAS A CAR -LENGTH FROM THE VEHICLE AHEAD OF ME. ALL VEHICLES WERE GOING STRAIGHT.