setEmissionClass(string, string) -> None

        Sets the emission class for this vehicle.

def setEmissionClass(self, vehID, clazz):
        """setEmissionClass(string, string) -> None

        Sets the emission class for this vehicle.
        """
        self._connection._sendStringCmd(
            tc.CMD_SET_VEHICLE_VARIABLE, tc.VAR_EMISSIONCLASS, vehID, clazz)