A lot has changed in the trucking industry over the last several decades. Diesel prices have skyrocketed, technology has changed how things are done, regulations have nearly crippled the industry, and the constricting regulations will likely not ease up any time soon.
The Federal Government began regulating the transportation industry in order to prevent railroads from charging inflated freight rates.
Congress passed the Motor Carrier Act, which gave the Interstate Commerce Commission (ICC) the authority to regulate motor carriers and drivers involved in interstate commerce. The ICC was given the authority to grant operating permits, approve trucking routes and set tariff rates. The agency set uniform tariff rates for hauling freight, which resulted in little to no competition due to pricing.
Containerization became a popular method of transporting freight. It reduced shipping costs, handling of the freight, and cut down on cargo theft and damage.