Zero-Emission Bus Evaluation Results: King County Metro Battery Electric Buses (Report 00118) Leslie Eudy and Matthew Jeffers | February 2019 Download the report
Zero-Emission Bus Evaluation Results: King County Metro Battery Electric Buses Leslie Eudy, Matthew Jeffers | February 2018 Download the report
Long Beach Transit: Two-Year Evaluation of Gasoline-Electric Hybrid Transit Buses M. Lammert | June 2008 Download the report
King County Metro Transit Hybrid Articulated Buses: Final Evaluation Results K. Chandler, K. Walkowicz | December 2006 Download the report