Regulation 3 Establishment and Maintenance of a Scheme
(1)
The chief constable may, if he considers it to be appropriate for the purposes set out in paragraph (2), establish and maintain a scheme.
(2)
Those purposes are—
(a)
contributing to railway safety and security; and
(b)
in co-operation with the Police Force, combating crime and disorder, public nuisance and other forms of anti-social behaviour.