korrents

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Why Building Metros is Necessary for the Green Transition Away from Cars

Alon Levy · 10 Mar 2026 · pedestrianobservations.com ↗

3 korrents from this piece

Alon Levy did not write this page.

Every claim below was made in this piece, quoted word for word and numbered in the order the piece makes them, so you can read it there rather than take our word for it. The sentence above each quote is our reading of the claim, not their wording. Each quote was checked against a stored copy of the page at build time; where the two differ, the quote is the fact.

  1. Our reading

    Beyond neighbourhood distances, cars and public transport are substitutes for each other, so a trip taken by rail really is a trip not taken by car.

    Their wordsBeyond the scale of a neighborhood or maybe a college town, cars and mass transit are substitutes for each other.
    Interesting

  2. Our reading

    Spreading jobs into a polycentric region does not cut commuting: transit ridership is weaker there than in cities with one strong centre.

    Their wordsNor does polycentricity solve the problem. Indeed, ridership in polycentric regions is weaker than in monocentric ones.
    Interesting

  3. Our reading

    Environmental cost-benefit analyses systematically understate what a new metro line is worth, because most of the driving it displaces happens elsewhere on the network.

    Their wordsThis, in turn, creates serious estimation problems for the diversion rate, which is why environmental benefit-cost analyses underrate the effect of urban rail construction.
    Interesting