R.G. Smart, "Transport Related Stress" in Stress Consequences: Mental, Neuropsychological and Socioeconomic (ed. George Fink: Academic Press, 2009), p. 708: "A national study in the United States found that ... of respondents ... 1-2% had gotten out of their cars to hurt other drivers, deliberately hit other drivers, or had carried a weapon."
Alan R. Felthouse, "Personal Violence" in The American Psychiatric Publishing Textbook of Forensic Psychiatry (2d ed.: eds. Robert I. Simon & Liza H. Gold), pp. 551-52
