setEmissionClass(string, string) -> None

        Sets the emission class of vehicles of this type.

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

        Sets the emission class of vehicles of this type.
        """
        self._connection._sendStringCmd(
            tc.CMD_SET_VEHICLETYPE_VARIABLE, tc.VAR_EMISSIONCLASS, typeID, clazz)