Clean air definitions

Clean air

1) Concern for the EPA 2) Environmental cause 3) Kind of act passed in 1970 4) Pollution legislation goal
Found on https://www.crosswordclues.com/clue/clean-air

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Clean air

Air that isn't turbulent, and thus offers optimum aerodynamic conditions, as experienced by a car at the head of the field.
Found on https://www.encyclo.co.uk/local/22582

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Clean air

Air that isn't turbulent, and thus offers optimum aerodynamic conditions, as experienced by a car at the head of the field.
Found on https://www.formula1.com/en/championship/inside-f1/glossary.html

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Clean Air

Air without turbulence created in the wake of other race cars. Clean air is found at the very front of the field.
Found on https://www.ricmotech.com/Racing-Glossary_b_2.html

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