Whether the SA National Roads Agency Limited (Sanral) has discontinued or cut back the maintenance and upgrading of alternative roads to all of the country’s existing toll roads; if not, what are (a) the releveant details of Sanral’s maintenance and/or upgrading plans in the period 1 January 2006 up to the latest specified date for which information is available and (b) Sanral’s future plans for the maintenance and upgrading of alternative roads to toll roads?