What is "freighthopping"

Freighthopping or train hopping is the act of surreptitiously boarding and riding a railroad freight car. In the United States, this became a common means of transportation following the American Civil War as the railroads began pushing westward, especially among migrant workers who became known as " hobos". It continued to be widely used by those unable to afford other transportation, especially during times of widespread economic dislocation such as the Great Depression. For a variety of reasons the practice is less common today, although a community of freight-train riders still exists.