This research was funded by the National Institute for Transportation and Communities, or NITC, a program of TREC at Portland State University.
Local transit -- Oregon -- Portland Metropolitan Area, Transit operators
By understanding driver absenteeism, transit providers can learn to manage it, Portland State University research suggests.
Strathman, James. Tracking Missing Drivers. Project number 2008-93. Portland, OR: Transportation Research and Education Center (TREC), 2010.