law: 41. Powers of Commissioner in relation to inquiries.
  (1) For the purpose of conducting an inquiry under this Chapter into the causes of any accident, the Commissioner shall, in addition to the powers specified in section 9, have the powers as are vested in a Civil Court while trying a suit under the Code of Civil Procedure, 1908 (5 of 1908), in respect of the following matters, namely:
  (a) summoning and enforcing the attendance of persons and examining them on oath;
  (b) requiring the discovery and production of documents; (c) receiving evidence on affidavits;
  (d) requisitioning any public record or copies thereof from any court or office; and (e) any other matter which may be prescribed.
  (2) The Commissioner while conducting an inquiry under this Chapter shall be deemed to be a Civil Court for the purposes of section 195 and Chapter XXVI of the Code of Criminal Procedure, 1973 (2 of 1974).