In the winter of 1771, the colonial assembly of Pennsylvania received a petition from voters in Lancaster County asking for the construction of a turnpike from the Susquehanna River to Philadelphia. Supporters of the project believed that the new road would spur economic development, and in support of this claim they cited developments in England. England's turnpikes, they argued, had made long-distance travel efficient and safe, had contributed to an expansion of commerce and manufacturing, and had increased the value of agricultural land. Shortly after these claims were published in the Pennsylvania Gazette, John Woolman, a Quaker reformer in Mount Holly, New Jersey, began hearing troubling stories about the English roads. Woolman was best known as an opponent of slavery, but in his writings and travels he had voiced concerns on an array of other economic issues, including exploitative labor relations generally, and the overwork and abuse of animals. In 1772, Woolman was planning to travel in England, and thus he had reason to pay attention to reports about the English roads.
One of the innovations of England's turnpike era was the “flying coach.” This was a carriage pulled by a team of six horses, and it achieved efficiency not so much by running fast as by starting early in the morning and going for long hours continuously. Woolman heard that flying coaches could cover one hundred miles in twenty-four hours, and that they “often run over foot people in the dark.”