Final answer:
The highway transportation system in the United States is regulated by a combination of local, state, and federal agencies.
Step-by-step explanation:
The statement is False. The highway transportation system in the United States is regulated by a combination of local, state, and federal agencies. While local agencies, such as state police, have the authority to enforce traffic laws on highways within their jurisdiction, they do not have sole regulation or control over the entire highway transportation system. The federal government plays a significant role in regulating interstate highways, setting safety standards, and distributing funding for transportation projects.