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Everything about TriMet

Transit agency serving Portland, Oregon

The Tri-County Metropolitan Transportation District of Oregon, branded as TriMet, is a transit agency that serves most of the Oregon part of the Portland metropolitan area. Created in 1969 by the Oregon legislature, the district replaced five private bus companies that operated in the three counties: Multnomah, Washington, and Clackamas. TriMet began operating a light rail system, MAX, in 1986, which has since been expanded to five lines that now cover 59.7 miles (96.1 km). It also operates the WES Commuter Rail line since 2009. It also provides the operators and maintenance personnel for the city of Portland-owned Portland Streetcar system. In 2025, the system had a ridership of 66,053,200, or about 209,800 per weekday as of the second quarter of 2026. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: TriMetA 5-minute orientation
  2. Pick up a classic book: The iambic trimeter in Aeschylus and SophoclesThe most-reprinted book on the subject
  3. Read the landmark paper: Analysis of Transit Signal Priority Using Archived TriMet Bus Dispatch System DataCited 69 times
  4. Go sideways: MAX Light RailA closely related topic
  5. Go sideways: MAX Red LineA closely related topic

đź“– Definitions

No dictionary entry for this exact phrase.

🗂️ The subject at a glance

  1. General information
  2. Rail lines
  3. Bus service
  4. Fares
  5. Fleet
  6. Paint schemes
  7. Timeline
  8. Future
  9. Communities served
  10. Safety
  11. Criticism and controversies

🏆 Landmark papers (most cited)

đź“š Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

đź”— Related topics