Yes—there are urban trash cans designed to be emptied from the bottom, but they are a specialized option rather than the standard. Most city litter bins are still emptied from the top because top-opening designs are simple, cheap, and easy for crews to service. Bottom-emptying bins appear where hygiene, ergonomics, or high-volume collection matter.
A common design is a public litter bin with a locked bottom door or hinged base. Collection staff unlock the base and let the contents fall directly into a bag or cart, so they do not have to reach into the bin or lift a heavy bag over the rim. This can reduce contact with waste, cut down on spills, and make servicing faster on busy streets.
Another type is the bottom-dump container used in some parks, transit areas, and dense commercial districts. These bins may be lifted by a special truck or emptied through a bottom hatch into a collection vehicle. Semi-underground and underground containers often use a similar idea: waste goes in at street level, and collection crews open or lift the lower section for emptying. The goal is to keep the street cleaner and make high-capacity collection more efficient.
There are trade-offs. Bottom-emptying trash cans need sturdy locks, well-designed seals, and compatible collection equipment. If the mechanism jams or the bin is not maintained, litter and odors can become a problem. They also tend to cost more than basic top-emptying bins, so cities usually use them selectively rather than everywhere.
So the short answer is yes: bottom-emptying urban trash cans exist, and they can be a smart choice in the right location. But they are not universal; they are one part of a wider street-cleaning and waste-collection system.