(1) For the purposes of sections 88(b) and 89(4)(e) of the Act, an image or message is produced by a prescribed process if—
(a) a printed image is produced from a digital file created by a digital toll camera unit in accordance with subregulation (2); and
(b) the data contained in the digital file has been verified by a computer—
(i) recalculating the checksum for that digital file; and
(ii) confirming that the checksum produced by the recalculation is identical to the checksum contained in that digital file, or the checksum for that digital file contained in the toll message file; and
(c) the printed image contains an image and a message indicating—
(i) the toll zone in which the vehicle to which the image relates was used; and
(ii) the date on and the time at which that vehicle was used in the toll zone.
(2) For the purposes of subregulation (1), a digital file is created by a digital toll camera unit if the digital toll camera unit is used in the manner referred to in regulation 10 and the digital toll camera unit processes the image taken by the unit by—
(a) converting the image taken into a digital format (with or without compressing the image); and
(b) generating data—
(i) indicating the toll zone in which the vehicle to which the image relates was used; and
(ii) from which the date on and the time at which that vehicle was used in the toll zone can be calculated; and
(c) combining into one digital file, the digital image with the data referred to in paragraph (b); and
(d) calculating a checksum for the digital file.