Transportation is the "circulatory system" of the United States economy and society, essential for maintaining the nation's high standard of living and global competitiveness in 2026. Economically, the transportation sector accounts for approximately 6% to 12% of the U.S. GDP, facilitating the movement of trillions of dollars in goods through a complex web of interstate highways, rail networks, and major ports. It enables geographic specialization, allowing regions to focus on industries where they have a comparative advantage—like agriculture in the Midwest or tech in California—knowing their products can reach any market. Socially, it provides vital access to employment, education, and healthcare for over 330 million residents. A robust transportation system is also a pillar of national security, ensuring the rapid mobilization of emergency services and military personnel. Without this integrated infrastructure, the "just-in-time" supply chains that stock modern grocery stores and fuel e-commerce would collapse, leading to immediate economic stagnation and localized shortages.