He was the Director of NSW Parliament’s Staysafe Committee, 1991-2006, where he worked on road safety and traffic policing issues. Julia Irwin is Lecturer in Psychology, Director of Undergraduate Studies in Psychology at Macquarie University, with a focus on traffic psychology. Richard Howitt is a Professor of Human Geography at Macquarie University. Robyn Dowling is a Professor of Human Geography at Macquarie University with research expertise in urban travel and suburban life.