That's 500k vehicles not 500k people.
While the plurality of vehicles could be single-occupant passenger vehicles, a good chunk of those vehicles are freight, multiple-occupant passenger vehicles, and some are even busses.
While the plurality of vehicles could be single-occupant passenger vehicles, a good chunk of those vehicles are freight, multiple-occupant passenger vehicles, and some are even busses.
There's a few trucks hauling freight, but they try to miss the cities during rush hour.
There's a lot of trucks hauling freight. The US has the largest train network in the world, it notoriously handles primarily freight, and still, more than 70% of freight in the US goes by truck.
If these roads are the average urban interstate highways, then about 10%ish of the traffic is heavy truck traffic.
https://www.fhwa.dot.gov/policyinformation/statistics/2020/v...
In fact there are so few people in the HOV lane that I always feel like I'm doing something wrong when I take it, like I misunderstood the rules. It can't be this easy.
Nah, I really am the only person on the highway with more than one person in the car.
But that could probably be handled by a US Highway and a diamond interchange instead of multiple interstates and a 6-layer interchange.