[vladd]

Subway line 14 in Paris is fully automated, has trains arriving every 85 seconds during peak hours, and has an hourly capacity of 30'000 - 40'000 seats/hour.

https://www.systra.com/IMG/pdf/metro_meteor_en-3.pdf

[samcheng]

Subway is complementary to high speed rail (or hyperloop).

The trains travel (on average) about 1/10th the speed, and the distances covered are much smaller.

The Hong Kong MTR (the worst commuter crush I've personally experienced) handles an eye-popping 75,000 commuters per hour per direction: https://www.mtr.com.hk/en/corporate/operations/detail_worldc...