Correct answer
Automatic levelling of the bodywork.
The pneumatic suspension system found in some heavy goods vehicles uses the compressed-air installation for the supply circuit and allows the bodywork to be automatically levelled according to the load being carried.
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Automatic levelling of the bodywork.
Improved vehicle handling, as it increases the sprung weight on each of its axles.
A reduction in the overload that existed on the mechanical springs.
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