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« https://www.princeton.edu/~reddings/papers/handbooktransport.pdf

« https://faculty.washington.edu/jbs/itrans/reflec2.htm

« https://www.sciencedirect.com/science/article/pii/S209526351930072X

« https://www.apta.com/wp-content/uploads/APTA-2022-Public-Transportation-Fact-Book.pdf

« https://uttri.utoronto.ca/wp-content/uploads/sites/19/2022/01/An-Integrated-Approach-to-Transit-System-Evolution.pdf

« https://afdc.energy.gov/files/pdfs/dart_tech_assess.pdf

« https://www.apta.com/wp-content/uploads/Resources/resources/statistics/Documents/FactBook/2018-APTA-Fact-Book.pdf

« https://www.transit.dot.gov/sites/fta.dot.gov/files/2024-10/2023%20National%20Transit%20Summaries%20and%20Trends_1.0.pdf

« https://www.adb.org/sites/default/files/publication/571691/adbi-handbook-high-speed-rail-quality-life.pdf

« https://ethz.ch/content/dam/ethz/special-interest/gess/energy-politics-group-dam/documents/Journal%20Articles/Huenteler%20et%20al_2016_Technological%20Forecasting%20%26%20Social%20Change.pdf