Ok kiddo, let me explain the Motor Carrier Act of 1980 to you.
This is basically a set of rules that the government made to control how people and things get transported by trucks across the country.
Before this act, some companies who owned the big trucks that carry things around, had a lot of power and could charge a lot of money for their services.
The government wanted to make sure that these companies were not overcharging people and businesses and that there was some competition between them.
So, they made a law called the "Motor Carrier Act of 1980" which said that the government would now have more control over these trucking companies. This act made sure that the pricing for transportation was fair, and it also made it easier for new trucking companies to enter the market.
This helped businesses that needed to send things across the country because the prices were cheaper and more companies could compete with each other to provide better service.
So, that's basically what the Motor Carrier Act of 1980 is all about - making sure that the transportation of people and things across the country is done fairly and responsibly.