Ministry of Transport v Alexander - [1991] 2 NZLR 281

Transport and transport licensing — Offences — Breath and blood alcohol prosecutions — Driving with excess breath alcohol — Admissibility of evidence — Traffic officer briefly locked suspect drinking driver in patrol car while he attended to other matters — Subsequent evidential breath test led to conviction for driving with excess breath alcohol — Whether locking of car was improper restraint of driver — Whether subsequent evidence was unfairly obtained and was inadmissible — Transport Act 1962, s 58(1)(a).