Catalyzes the oxidation of D-lactate to pyruvate. Has also weak activity with L-lactate and DL-2-hydroxybutyrate. Electrons derived from D-lactate oxidation enter the electron transport chain. Essential for growth with D-lactate as sole carbon and energy source. (R)-lactate + a quinone = a quinol + pyruvate Optimum pH is 7.0. Optimum temperature is 45 degrees Celsius. Constitutively expressed. Inactivation results in the loss of the ability to grow with D-lactate. Belongs to the quinone-dependent D-lactate dehydrogenase family.