The U.S. trucking industry is comprised of how many million for-hire, private motor, and other interstate motor carriers?

Answer: B — 1.48 million

The U.S. trucking industry includes a significant number of for-hire, private motor, and other interstate motor carriers, which collectively totals approximately 1.48 million. This figure reflects the complexity and scale of the industry, encompassing various types of trucking operations, from large freight carriers to smaller logistics companies. The statistic is essential for understanding the industry's size, economic impact, and the widespread nature of trucking services across the country. This number is based on comprehensive data gathered from industry sources, regulatory agencies, and market research, highlighting the vital role that trucking plays in the American economy. Knowing this figure helps in understanding the competitive landscape and regulatory environment that affects motor carriers.