The Bus Lanes (Approved Devices) (England) Order 2005

3.  The equipment includes a recording system in which—

(a) recordings are made automatically of the output from the camera or cameras surveying the bus lane or selected area;

(b) recordings are made—

(i) using videotape which records at a minimum rate of 5 frames per second; or

(ii) using a secure digital recording method which records at a minimum of 5 frames per second.

(c) each frame is timed (in hours, minutes and seconds), dated and sequentially numbered automatically, using a visual counter which resets to zero when the recording system is initially activated and increments for each frame;

(d) the location of the bus lane or selected area being surveyed is shown; and

(e) where any part of the equipment is controlled manually, two simultaneous recordings are made of the camera output viewed by the operator.