(4) In addition to the powers that may be conferred on any officer 'of the Motor Vehicles Department under subsection (3), such officer as may be empowered by the State Government in this behalf shall also have the power to ( ) (a) make such examination and inquiry as he thinks fit in order to ascertain whether the provisions of this Act and the rules made thereunder are being observed; (b) with such assistance, if any, as he thinks fit, enter, inspect and search any premises which is in the occupation of a person who, he has reason to believe, has committed an offence under this Act or in which a motor vehicle in respect of which such offence has been committed is kept: Provided that (i) any such search without a warrant shall be made only by an officer of the rank of a gazetted officer; (ii) where the offence is punishable with fine only the search shall not be made after sunset and before sunrise; (iii) where the search is made without a warrant, the gazetted officer concerned shall record in writing the grounds for not obtaining a warrant and report to his immedi ate superior that such search has been made; (c) examine any person and require the production of any register or other document maintained in pursuance of this Act, and take on the. spot or otherwise statements of any person which he may consider necessary for carrying out the purposes of this Act; 308 (d) seize or take copies of any registers or documents or portions thereof as he may consider relevant in respect of an offence under this Act which he has reason to believe has been committed; (e) launch prosecutions in respect of any offence under this Act and to take a bond for ensuring the attendance of the of fender before any court; (f) exercise such other powers as may be prescribed: Provided that no person shall be compelled under this sub section to answer any question or make any statement tending to incriminate himself.