House of Commons Library : Roads: speed cameras
Standard Note: SN350
Last updated: 15 April 2013 http://researchbriefings.files.parliament.uk/documents/SN00350/SN00350.pdf
Department of Transport: 31/jan/2007 USE OF SPEED AND RED-LIGHT CAMERAS FOR TRAFFIC ENFORCEMENT: GUIDANCE ON DEPLOYMENT, VISIBILITY AND SIGNING http://webarchive.nationalarchives.gov.uk/20070205102153/http:/www.dft.gov.uk/pgr/roadsafety/cameras/pdfdftcirc0107?version=2
ACPO Speed Enforcement Guidelines:
http://www.pepipoo.com/files/ACPO/ACPO_enforcement_guidelines.htm
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