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  1. What is the oldest operating subway system in the world, and when did it open?
  2. In which city would you ride the “U-Bahn” transit system?
  3. Which metro system has the highest daily ridership in the world?
  4. What city’s subway line is known for having a “ghost station” that trains pass without stopping?
  5. Which city’s public buses feature “articulated” (bendy or accordion) buses most frequently?
  6. What transit system is sometimes called “The Tube,” and what is the nickname for its employees who operate the trains?
  7. What is unique about the subway in Lausanne, Switzerland?
  8. In which city can you ride the world’s longest bus rapid transit system?
  9. Which major city’s subway system is known for its lavish and ornate station designs that were originally intended as “palaces for the people”?
  10. What North American city was the first to introduce contactless payment cards for transit riders?
  11. Which country’s capital city has a subway system with the deepest station in the world, and what is the station’s name?
  12. What is the official color of the New York City subway line colloquially called “the A train”?
  13. Which subway system operates a train line entirely automated without drivers (driverless trains)?
  14. In which city did double-decker buses become an iconic part of public transit, and what is the nickname for their most famous bus model?
  15. What Asian city’s subway system has a library-on-the-go with books available in some stations?
  16. Which city is noted for having the largest tram (streetcar) network in the world?
  17. What is the only city where you can transfer from a subway directly to a cable car within its public transit system?
  18. What South American city runs the only metro system powered exclusively by renewable energy?
  19. In which country can you ride the “Shinkansen,” and what is it more commonly called in English?
  20. Which city’s subway system was the first to provide free Wi-Fi in all its stations?