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SheeEttin t1_j7v8l4v wrote

Reply to comment by KrissaKray in Want passenger rail in Manchester? Make your voice heard by PurpleSubtlePlan

One study found a 4-to-1 return over 10 years: https://www.masstransitmag.com/management/article/21072535/apta-study-public-transit-investment-stimulates-a-4to1-return

So, averaging it out, in 2.5 years.

The source might be biased because it's a public transit advocacy org, but I haven't found any other studies.

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