Catalyzes the stereospecific oxidation of D-lactate to pyruvate. (R)-lactate + 2 Fe(III)-[cytochrome c] = 2 Fe(II)-[cytochrome c] + 2 H(+) + pyruvate Binds 2 FAD. By D-lactate. Induced during respiratory adaptation. Present with 10800 molecules/cell in log phase SD medium. Belongs to the FAD-binding oxidoreductase/transferase type 4 family.