Young adults in America are decreasing the amount they drive and increasing their use of transportation alternatives, according to a new report released today by a public interest group.

The report, "Transportation and the New Generation: Why Young People are Driving Less and What it Means for Transportation Policy," released by the CalPIRG Education Fund with Frontier Group, shows that Americans have been driving less since the middle of last decade.

“For the first time in two generations, there has been a significant shift in how many miles Americans are driving each year,” said Jon Fox, consumer advocate with the CalPIRG Education Fund. “America needs to understand these trends when deciding how to focus our future transportation investments, especially when transportation dollars are so scarce.”

Transportation and the New Generation reveals that for the first time since World War II, Americans are driving less and have been doing so since the middle of last decade. The report shows that by 2011, the average American was driving 6% fewer miles per year than in 2004.

This trend away from driving is even more pronounced among young people. The average young person (age 16-34) drove 23% fewer miles in 2009 than the average young person in 2001. The report also notes that a growing number of young Americans do not have driver’s licenses; from 2000 to 2010, the share of 14-year-olds to 34-year-olds without a license increased from 21% to 26%.

“The shift away from six decades of in­creasing vehicle travel to a new reality of slow-growing or even declining vehicle travel has potentially seismic implica­tions for transportation policy,” said Benjamin Davis, analyst with Frontier Group. “It calls into question the wisdom of our current transportation investment priorities.”

According to the report, between 2001 and 2009, the annual number of miles traveled by 16 to 34 year olds on public transit, such as trains and buses increased by 40%.

“I would rather have good public transportation options than the hassle and expense of driving a car,” said Sofie Karasek, a freshman at UC Berkeley. “It’s time for our leaders to stop debating how much to spend expanding our grandparents’ transportation network and start figuring out how to build the infrastructure that my generation will need for the future.”