That's an excellent and practical question! It really depends on the specific design and model of the bin, as there's no universal standard. In many modern cities, yes, a significant portion of public trash bins are designed with detachable or hinged lids specifically for easier cleaning and maintenance. Municipalities and manufacturers have learned that easy access is crucial for sanitation workers to thoroughly clean the interior, remove stuck debris, and control odors and pests.
You'll often find lids that either lift off completely with a simple unlock mechanism or are attached with robust, easy-to-release hinges. This design consideration helps maintenance crews perform their jobs more efficiently and safely. However, some heavier-duty or more secure models might have permanently fixed lids to prevent theft or vandalism, with cleaning access provided through a large main opening. The trend, especially for high-use urban areas, is definitely toward user-friendly, maintainable designs that support public health and cleanliness.