Section 5A(1) and (2) of the Road Traffic Act 1988 makes it an offence for a person to drive, attempt to drive, or be in charge of a motor vehicle on a road or other public place with a specified controlled drug in the body, if the proportion of the drug in that person’s blood or urine exceeds the specified limit for that drug. These Regulations specify the controlled drugs for this purpose and the limit for each expressed as a concentration in blood.

An impact assessment of the effect that the offence will have on the costs of business, the voluntary sector and the public sector is available from the Road User Licensing, Insurance and Safety Division, Department for Transport, Great Minster House, 33 Horseferry Road, London SW1P 4DR (telephone 020 7944 6945). The impact assessment is annexed to the Explanatory Memorandum which is available alongside this instrument on the UK legislation website at www.legislation.gov.uk.