Some rollercoaster tracks are filled with sand to muffle the loud noise produced.


When the theme park Canada Wonderland was originally built in the 1980’s, the park was only surrounded by farmland, but as the city expanded, a large residential area was constructed next to the park. When the park introduced the huge rollercoaster Leviathan (93 meters tall, top speed 150 kph) nearby residents started complaining of the excessively loud noise it produces. The park hired acoustic engineers, which suggested to fill the rollercoaster tracks to absorb the vibrations and reduce the noise significantly.


Source: Art of Engineering

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