El Patrullero (aka Highway Patrolman) (1991) is the first Mexican feature film by the British director Alex Cox. It was produced by Lorenzo O'Brien, who also wrote the screenplay, and stars Roberto Sosa, Bruno Bichir, Zaide Silvia Gutiérrez and Vanessa Bauche. The cinematography is by Miguel Garzon and the production designer was Cecilia Montiel, who went on to work on The Mask of Zorro as well as on Cox's Alan Smithee film The Winner. Cox considers El Patrullero to be his best work while a number of prominent film critics have expressed the same opinion as well.
The film tells the story of a young man, Pedro Rojas (Roberto Sosa) starting his career as a Highway Patrolman in the rural north. He refuses to take part in the corruption in the police force, unlike his friend Anibal Guerrero (Bruno Bichir) who quickly starts taking bribes and peddling contraband.