EE WAS DRIVING THE VOLVO REFUSE TRK AT TIME OF INCIDENT. HE WAS TRAVELING ON THE IMPOUNDMEMNT ROADWAY & THE GROUND WAS STARTING TO THAW OUT. THE ROAD HAD A WASH BOARD OF BUMPS BECAUSE OF EQU UIPMENT TRAVELING ON IT PLUS THE FREEZING & THAWING CURRENTLY PRESENT. THE TRK STARTED TO BOUNCEEE PLANTED HIS LEFT FOOT TO BRACE HIMSELF AFTER THE TRK HAD BOUNCED 3 TIMES, & STOPPED EE FELT A