It obviously depends – in Tokyo, or NYC, you’ll have almost-full trains 24&#x2F;7. As you obviously use smaller trains at night, and only full trains during rush hour.<p>Even with busses, most transit authorities have lots of different sizes – from 10 people busses in rural areas at night, to bi-articulated busses for 300 people at rush hour in downtown areas.<p>If you always try to use the same vehicle, though, yes, you get the same mileage as an average car. You still save space on the roads, though.