Commuter trains have dedicated tracks so they don&#x27;t suffer from the same congestion issues as carpools and buses (if we ignore the benefit of commuter lanes on the roadways).<p>Commuter trains take advantage of their dedicated tracks to make many stops without impacting travel speed too hugely. (Imagine if your vanpool exited the freeway and slogged through surface streets for 10-20mins for each passenger it deposited).<p>Commuter trains travel routes that go to where people work, and people choose to live near the train routes as a lifestyle choice. You&#x27;re not going to know where your carpool buddy might live before you choose a house.