Every time you get on an airplane, take a railway train to visit family, or drive down the highway to go on an adventure, you're putting your safety in the hands of the Department of Transportation. The Cabinet department determines how the country's various public transit systems operate and connect, what the rules are for airline flight, and how highways and roadways are constructed and maintained. Readers will learn about the various rules and regulations the DOT is responsible for, and how those rules help keep us safe whenever and wherever we travel in America.