THE RAILWAYS ACT, 1989 – Chapter XII – Section 117

117. Statement Made Before Commissioner
No statement made by a person in the course of giving evidence in an inquiry before the Commissioner shall subject him to, or be used against him in, any civil or criminal proceeding, except a prosecution for giving false evidence by such statement;
Provided that the statement is:-

(a) Made in reply to a question which is required by the Commissioner to answer; or
(b) Relevant to the subject-matter of the inquiry.

Forward reference⇒Section 118