Section 111
Officers of customs may stop and search conveyances
The person in charge or in control of any vehicle arriving at a prescribed place of import and export shall, on arrival at such place, produce his vehicle to the proper officer of customs, and shall, if so required, move his vehicle to another place for examination, and shall not proceed until permission to do so has been given by the proper officer of customs.
(2)
Any officer of customs may stop and examine any vehicle for the purpose of ascertaining whether any uncustomed or prohibited goods are contained therein, and the person in control or in charge of such vehicle shall if required so to do by such officer, stop such vehicle and allow such officer to examine the same.
122
(3)
The person in control or in charge of any vehicle examined under this section shall on request by the proper officer of customs open all parts of the vehicle for examination by such officers and take all measures necessary to enable such examination as such officer considers necessary to be made.