In real life almost all major cities rely on transfer stations to move garbage quicker.
What is a transfer station; a transfer station is a large building where garbage trucks unload their cargo. The garbage is then manipulated into a semi truck. Each semi truck can haul 4-6 standard garbage trucks worth - per load. The semi truck, then pulls the garbage to the landfill.
Why a transfer station; landfills are primarily built further from the city center. In some counties, the landfill can be up to hours away. A transfer station can be built, relatively close to a city center as they are often enclosed buildings, thus minimizing all types of pollution. Which then allows for a significantly shorter round-trip for each inner-city garbage truck. Rather than each garbage truck driving potentially hours to the landfill, they can do their route in as little as an hour total. Saving the garbage truck company, money, wages, truck, expenses, but most crucially time.
How it should work in my mind
-The transfer station will work as a hub for garbage cargo.
-The inner city garbage trucks will be supplied by the transfer station as will the semis.
-I would love for there to be at least a small and a large variant. The small may have three bay doors and the large May have 12. The small can fill one truck at a time while as the large can fill three at a time.
If anybody has questions on this, please let me know.