Seattle's Link light rail line reports an 82.4% May-over-May weekday passenger increase after the recent northward extension. Also 17.2% more for the two heavy rail commuter lines that run during rush hours. And 2.7% more for the Sound Transit's express buses. (This doesn't include King County Metro, our primary bus agency.)
http://www.soundtransit.org/sites/de...nce-report.pdf