With all due respect. The Motor Carrier Act of 1980 is far and away the most destructive event in trucking.
O.K. then it's the 2nd worst thing then. If you ask me I think they are both tied for 1st.
Motor Carrier Act of 1980 initiated the demise of the smaller union carriers, which placed the burden on the larger companies to support the pension funds.
This has lead to the situation we now face.
It also was the basis for NAFTA.