Education
Johnston was educated at the University of Melbourne.
Johnston was educated at the University of Melbourne.
He is a fellow of the Australian Academy of Technological Sciences and Engineering. In 1991, he was appointed professor and director of the Monash University Accident Research Centre (MUARC) - the largest accident research centre in the Southern Hemisphere. Upon his retirement, he was praised by senior university and government figures as extremely influential in reducing road injuries in Victoria and worldwide.
Prior to assuming his role at the MUARC, Johnston held a number of positions, including Director of Road Safety for the Government of Victoria under the John Cain II government.