def setLength(self, typeID, length):
        """setLength(string, double) -> None

        Sets the length in m of the vehicles of this type.
        """
        self._connection._sendDoubleCmd(
            tc.CMD_SET_VEHICLETYPE_VARIABLE, tc.VAR_LENGTH, typeID, length)
setLength(string, double) -> None

        Sets the length in m of the vehicles of this type.