Final answer:
The Federal Railroad Administration (FRA) regulates rail travel in the United States to ensure safety and compliance.
Explanation:
The Federal Railroad Administration (FRA) is the federal agency that regulates rail travel in the United States. It ensures the safety of railroad operations, establishes standards for railroads, and conducts inspections to enforce compliance.
Example:
- The FRA mandates the implementation of Positive Train Control (PTC) systems on railroads to enhance safety.
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