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]
The application of HVM bollards extends beyond security. They are also crucial for traffic management, directing vehicle flow and enhancing pedestrian safety. In areas where foot traffic is high, such as shopping districts or near public transit stations, bollards help to clearly delineate pedestrian pathways and vehicle traffic, reducing the chances of accidents. By visually and physically guiding movement within an environment, they play an essential role in facilitating smooth traffic patterns and ensuring that pedestrians feel safe navigating urban spaces.
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2. Removable Bollards These allow for flexibility in vehicle access. When not in use, they can be easily removed or stored. This type is ideal for events or areas where vehicle access is sometimes necessary but needs to be restricted at other times.
4. Minimal System Disruption Applying a repair clamp typically requires only partial drainage of the system, thus reducing the impact on overall operations. This feature is especially beneficial in critical systems where shutting down the entire operation can lead to significant losses.
The Importance of Addressing Broken Drain Covers