setImperfection(string, double) -> None

        Sets the driver imperfection sigma.

def setImperfection(self, vehID, imperfection):
        """setImperfection(string, double) -> None

        Sets the driver imperfection sigma.
        """
        self._connection._sendDoubleCmd(
            tc.CMD_SET_VEHICLE_VARIABLE, tc.VAR_IMPERFECTION, vehID, imperfection)