[mahkeiro]

I lived near a train line with a train every 5-15m 24h, Trust me, you don’t want to live near it either…

[jcgl]

Yeah, that has societal cost too, to be sure. Which implies prima facie that such infra (roadways, high-frequency train lines) should be minimized. Since the throughout of mass transit is so much higher (iow, the societal cost per-user), mass transit is a better way to minimize those costs than cars.