Driving under the influence of alcohol is a contributing factors to a number of road traffic accidents. There is, however, a lack of research into the behaviours that lead to drink driving. The current research used a novel approach, behaviour sequence analysis, to investigate the chains of behaviours that lead to drink driving. Statements were taken from individuals (N = 60) in an interview, reporting a time they had consumed alcohol and driven a vehicle. Statements were coded and the sequences of behavioural pairs were analysed. Results were presented in a state transition diagram, and indicated a variety of behavioural sequences leading to drink driving. A significant chain of events showed that individuals who had attempted to calculate their blood alcohol concentration and then drive a vehicle felt unsafe to drive, after driving. Also, many individuals did not intend to drink and drive; however, influences such as peer pressure and being surrounded by alcohol lead to them being more likely to consume multiple alcoholic drinks, and then drive a vehicle. The current research outlines future research, and implications for polices and laws on behaviours that surround drink driving, as well as providing a new method for research.