What was the growth rate in highway vehicle miles traveled (VMT) for every 5-year period in the 1960s?

Answer: B — 3%

The growth rate in highway vehicle miles traveled (VMT) for each 5-year period in the 1960s was approximately 3%. This figure reflects the significant expansion of the United States' transportation infrastructure and the growing reliance on automobiles during that decade. The 1960s saw a post-war boom in economic activity, population growth, and suburbanization, all of which contributed to an increasing number of miles driven. This rate is a benchmark in the study of transportation trends, capturing an era when vehicle ownership and usage were rapidly climbing, laying the groundwork for future decades. Understanding this growth rate is essential for analyzing historical transportation patterns and making projections or assessments related to infrastructure development and traffic management in subsequent years.