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Will new transportation technologies increase urban density?

Will 21st century transportation innovations work against urban density, as the car did in the 20th century, or promote urban centralization, as the railroad did in the 19th century?

  • Shared mobility and autonomy may increase urban density in larger cities.
  • Discretionary daily trips and entertainment in city centers could boost trip elasticity.
  • Regulatory hurdles and existing infrastructure may limit technology impact in Europe and U.S.

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