The most famous bus of this type, a typical red London double-decker bus, seats between 60 and 80 passengers. They are between 10.5 and 10.9 m in length and are a common reference item for describing very large objects; for example, a blue whale is about as long as three double-decker buses. They were created as a means of carrying large numbers of passengers without exceeding legal limits on vehicle length.
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