THE RAILWAYS ACT, 1989 – Chapter IV(A) – Section 20(L)

20(L) Utilization of Land for the Purpose it is Acquired

(1) The land acquired under this Act shall not be transferred to any other purpose except for a public purpose, and after obtaining the prior approval of the Central Government.
(2) When any land or part thereof, acquired under this Act remains un-utilized for a period of five years from the date of taking over the possession, the same shall return to the Central Government by reversion.

Forward reference⇒Section 20(M)