My dad owned a trucking business for years, and it sickens me how heavily regulated the industry is. The equipment, the taxes, the stickers, the regulations, the cops; it's a complete nightmare. Did you know that if you have a fleet of trucks, you have to individually track the mileage of each truck, and at the end of the year, you have to calculate its total average fuel mileage. You then have to multiply that fuel mileage by how many miles you ran in each state in the US (which you also have been keeping track of, even though you cross state borders multiple times per day, all year) so that you can pay the appropriate state fuel taxes?
The trucking industry has a public image problem; nobody likes trucks, truckers, truck stops, or trucking companies but they like buying things 2000 miles inland. This makes the industry really easy to regulate.