Which of the following was a significant legislation signed by Franklin D. Roosevelt related to highways?

The Federal-Aid Highway Act was a significant piece of legislation during Franklin D. Roosevelt's presidency because it laid the foundation for the development of a national network of highways in the United States. This act, enacted in 1938, provided federal funding to assist states in the construction and maintenance of highways, which was critical for improving transportation infrastructure during a time when the country was recovering from the Great Depression. The act not only aimed to enhance mobility and safety but also sought to stimulate economic growth by creating jobs in the construction sector.

The importance of this legislation cannot be overstated, as it marked a shift towards federal involvement in highway development, recognizing that a robust highway system was essential for national connectivity and economic efficiency. It also set a precedent for future federal highway legislation, including the more comprehensive National Interstate and Defense Highways Act of 1956, which would later lead to the creation of the Interstate Highway System.

The options related to the other acts, while likewise associated with highway infrastructure, either occurred later or had different scopes that did not originate during Roosevelt's administration. Understanding this context highlights the significance of the Federal-Aid Highway Act in shaping the trajectory of transportation policy in the United States.