Interested in the HOW and WHY Tractor Trailers Rollover? Visit my research submission to the Transportation Research Board, posted at WWW.DEFORMABLEKINGPIN.COM; That will expose a time line of over 40 years of common sense neglect to save further Destruction, Harm and the ( Deaths of Men, Women & Children by the many Hundreds each year ) when many Thousands of these T/T Rollover accidents occur--each year and are NOT always the Drivers fault. D.J.K. 6-13-2017