Paragraph 47
The undertaker wherever applicable in monitoring infringements of these byelaws and in the prosecution of offenders is entitled to rely where appropriate—
(a)
on the evidence of a device adapted for measuring the speed of vehicles by radar, laser or ANPR or any other means as may be approved by the Secretary of State; and
(b)
to make admissible recorded images from the flow of traffic on the Rixton and Warburton Bridge.