# The Road Traffic Offenders (Prescribed Devices) Order (Northern Ireland) 2005, Article 2: Prescribed device


The following device is hereby prescribed for the purposes of Article 23 of the Road Traffic Offenders (Northern Ireland) Order 1996, that is to say, a device designed or adapted for recording a measurement of the speed of motor vehicles by –
(a) capturing by means of unattended cameras images of the motor vehicle at each of two pre-determined positions on the road;
(b) digitally recording each image and the time at which it is captured; and
(c) calculating the average speed of the motor vehicle over the distance between the two positions mentioned in paragraph (a) by reference to the times mentioned in paragraph (b).

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Source: https://www.legislation.gov.uk/nisr/2005/263/article/2 (the official version)
Page: https://openlegislation.uk/road-traffic-offenders-prescribed-devices-order-northern-ireland-2005/article-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.