This 1986 report, a Bicycle Theft Research Project for the State Bicycle Committee of Victoria, investigates the nature and extent of bike theft and evaluates various prevention and recovery strategies. It highlights the low rate of cleared thefts and returned bikes, largely due to poor bicycle identification and ineffective security devices. The report proposes a range of countermeasures, with a universal bicycle registration system as the central recommendation, aimed at increasing identification, deterring thieves, and improving recovery rates, alongside public education and improved policing efforts.