That's an excellent and very specific question! Yes, absolutely. Many modern urban waste management systems do utilize trash bins with domed or rounded tops precisely for that reason. The design is a simple yet effective form of "hostile architecture" intended for public benefit.
The primary purpose of the domed top is to deter people from placing items like coffee cups, food containers, or personal belongings on top of the bin. When items are left there, they often fall off, get knocked over by wind or passersby, and ultimately become litter, defeating the bin's purpose. A smooth, sloped dome offers no flat, stable surface, encouraging people to actually place waste *inside* the receptacle.
This design addresses several urban maintenance issues. It reduces wind-scattered litter, discourages pests like birds and rodents from scavenging on easily accessible leftovers, and maintains a neater aesthetic for public sidewalks, parks, and transit areas. You'll commonly see these domed bins in high-foot-traffic city centers, near public seating, and in areas with existing litter challenges.
While the dome is a passive deterrent, it's often combined with other features for maximum effectiveness. These can include clearly labeled recycling/trash streams, wide openings for easy use, and robust, tamper-resistant construction. So, next time you're in a city and see a bin with a rounded top, you'll know its shape is a thoughtful part of keeping the environment cleaner for everyone.