Which of the following factors Govern the Permanent Way Renewal of tracks?
(a) Incidence of rail fractures/failures
(b) Wear on rails
(c) Maintainability of track to prescribed standards
(d) Expected service life in terms of Gross million terms carried
1
All (a), (b), (c) and (d)
2
Both (a) and (c)
3
Both (b) and (c)
4
Both (a) and (b)