The caller reported seeing a big rig towing another tractor-trailer on a >>>>>>> San Francisco freeway<<<<<<<<< using nothing more than the pipe and chain, CHP OFFICERS FROM THE GOLDEN GATE DIVISION QUICKLY INTERCEPTED THE VEHICLES AND UPON INSPECTION, THEY FOUND ADDITIONAL SAFETY HAZARDS, INCLUDING THE TRUCK'S BRAKE CHAMBERS DRAGGING ALONG THE ROADWAY - A CLEAR SIGN OF FAULTY BRAKES. We don't need no stinking CD license. Or obey your stinkin laws. ANY GUESSES. NO pictures or Names of Tow truck driver or who was in the cab of the truck being towed.