High-speed rail plans, announced by the White House in 2009, are back on track after Amtrak commits to upgrades in the Northeast and California approves billions to build new tracks.
With a high-speed passenger rail network proposed for the US, companies are gearing up to build the equipment on American soil.
About $50 billion in backlog repairs is needed for rail transit systems, but just $5.6 billion was spent in 2006, according to one report.
Instead of driving, students opt to walk, ride public transportation, or use Zipcar.
With ridership up, L.A.'s Metro raises fares and pushes for new tax revenue.