This Order commences, so far as extending to Northern Ireland, section 56 of, and Schedule 22 to, the Crime and Courts Act 2013 (c. 22). Section 56 creates a new drug driving offence in Great Britain, and Schedule 22 makes consequential amendments to primary legislation, including some primary legislation which extends to the United Kingdom. Section 56 and Schedule 22 came into force in England and Wales on 2nd March 2015, and will be come into force in Scotland on 1st March 2018.
Link: The Crime and Courts Act 2013 (Commencement No. 1) (Northern Ireland) Order 2018
Source: Legislation .gov.uk