WE WERE SOUTHBOUND ON I25, EXT 261,STATE OF COLORADO, GOING ABOUT 45 MPH IN LANE #1 WHEN MY VEHICLE, A 1997 TOYOTA 4RUNNER SUDDENLY VEERED TO THE LEFT LANDING ON THE MEDIAN HITTING THE GUARDRAIL AND CAUSING A 3 CAR ACCIDENT. THE WEATHER WAS A LITTLE SNOW AND THE FWY SURFACE APPEARED CLEAR. *TR