4(1)In Chapter 1 of Part 2 of the Transport and Works Act 1992 (safety of railways etc: offences involving drink or drugs), section 31 (provision of specimens for analysis) is amended as follows.
(2)For subsection (2) substitute—
“(2)A constable may make a requirement under this section to provide specimens of breath only if—
(a)the requirement is made at a police station or a hospital, or
(b)the constable is in uniform.”
(3)After subsection (7) insert—
“(7A)A constable may arrest a person without warrant if—
(a)the person fails to provide a specimen of breath when required to do so in pursuance of this section, and
(b)the constable reasonably suspects that the person has alcohol in his body.”