The objective of this study was to assess the knowledge and behaviour of the fathers of a sample of female students. A random sample of 2469 drivers from Dammam, Alkhobar, Qateef and Jubail was studied. Data were collected using a structured self-administered questionnaire which incorporated questions on driver's knowledge and behaviour regarding road traffic regulations. The study found that 52% of the sample had been involved in previous road traffic accidents, 75% were seat-belt compliant and 60% used mobile phones while driving. The drivers' knowledge about road traffic regulations and risks did not match their behaviour.