https://www.metro-magazine.com/news/caltrans-awards-78m-to-transit-air-quality-projects
Caltrans awards $78M to transit, air quality projects | Metro
Apr 30, 2011 - Funding comes from a 2006 voter-approved transportation bond, which includes $3.6 billion to improve public transit in California.
air quality projectscaltransawardstransitmetro