Because of their aerodynamic design, some modern racing cars create enough vacuum to lift a manhole cover off its recess. During races on city streets, manhole covers must therefore be welded or locked down to prevent injury. In 1990, during the Group C World Sportscar Championship race at Circuit Gilles Villeneuve (located in a public park in Montreal, Quebec), a Brun Motorsport Porsche 962 struck a manhole cover that was lifted by the ground effect of the car he was following, a Courage C24 Porsche. This caused the trailing Porsche to catch fire, and safety issues ended the race shortly afterwards.[citation needed]
Moreover, lidless dustbins can help prevent organic waste accumulation. In the absence of a lid, odors from decaying food and other organic materials can dissipate more easily, reducing the chances of attracting pests such as rats and insects. This is particularly crucial in cities where sanitation is a major concern. By limiting the attraction of pests, lidless bins can contribute to a healthier environment for both humans and wildlife.
dustbin without lid
Design Features and Benefits
double bin 80l

Aesthetic Appeal and Customization
Safety is of utmost importance when working in deep manholes. Workers must follow specific protocols and use proper protective equipment to mitigate the risks associated with confined spaces, such as poor air quality, limited visibility, and potential hazards like moving water or equipment.