(1) What is Transnet’s current backlog in respect of maintenance and repairs of (a) pipelines, (b) port terminals, (c) rolling stock and (d) rail infrastructure, specifically (i) signalling, (ii) rail yards, (iii) communications systems and (iv) rail tracks; (2) what amount is needed to eradicate these backlogs; (3) whether there are any plans in place to eradicate these backlogs; if not, why not; if so; what are the relevant details?