The CTA is committed to the goal of cleaner air in the Chicago region. We've achieved significant emissions reductions from our rail, bus and support fleets through advanced vehicle technologies and alternative fuel sources.
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CTA’s fleet of about 1,200 rail cars carries about 40 percent of all CTA rides.
The CTA maintains a fleet of more than 1,800 buses, which carry about 60 percent of all CTA rides. We are continuing to increase the energy efficiency of our bus fleet and reduce emissions.
CTA maintains a fleet of support vehicles which are used to monitor bus performance, transport materials, and maintain our vehicles and properties. Our ongoing purchase of low-emissions support vehicles earned an Illinois Green Fleets designation from the Illinois EPA in 2002, and we have increased our fuel efficiency every year between 2008 and 2012.