That's a great and often overlooked question! Yes, many modern urban trash cans, especially those designed for high-traffic public areas, parks, or residential complexes, do incorporate features to reduce the loud "bang" of a closing lid.
Traditional metal lids can be quite noisy. To address this, manufacturers now use several methods. A common feature is the use of soft-close or dampened hinges. These mechanisms, often containing hydraulic or pneumatic pistons, slow the lid down just before it closes, allowing it to settle gently without a slam. Another approach is lining the rim of the bin or the underside of the lid with a rubber or silicone gasket. This creates a seal that muffles the impact sound. Furthermore, the materials themselves have evolved. Many contemporary bins use durable plastics or composite materials that naturally produce less resonant noise than metal when struck.
So, while not every single public bin has this technology, it's becoming a standard consideration in urban design. The goal is to maintain cleanliness while minimizing noise pollution, contributing to a more pleasant and peaceful public environment for everyone.