The Toronto Transit Commission employees were on strike for 23 days, producing a total shut-down of all public transportation and a resulting increase in the number of hitch-hiking females. The strike provided a novel and unique opportunity to empirically examine two theories of sexual assault and to evaluate the effects of hitch-hiking upon sexual offences. During the strike the number of sexual offences against hitch-hiking females increased nine times and accounted for 12.86% of all sexual offences as compared to 1.59% during the Pre-Strike periods. The total number of sexual offences was unaffected by the strike. The results disconfirm the theory that sexual offences are victim-provoked, and support the theory that the female victim is not responsible for the offense. Five preventative measures were proposed to reduce the incidence and severity of sexual offences. (Author)