Yes. For an extreme example, here's Rotterdam's container port. Zero people in the quay area.[1] This is sped up, but entirely real. Not only are the vehicles driverless, so are the cranes. A few people in a control tower oversee that operation.

[1] https://www.youtube.com/watch?v=zm_rlLyelQo

Amazing

Containerization alone is probably responsible for half of that.

If you want a good read on containerization, I'd really recommend reading 'The Box', a history of shipping containers. For a topic that might sound bland, it's fascinating.

https://www.amazon.com/Box-Shipping-Container-Smaller-Econom...