O'Brien Traffic is a private consultancy specialising in traffic engineering, transport planning and road safety O'Brien Traffic was established in 1986. Experience, skill and insight have been the hallmarks of the business since its founding. We provide advice to the public and private sectors including developers, Councils, State Government Agencies and objectors. We have extensive experience in working with multi-disciplinary teams, and regularly interact with other professionals including town planners, urban designers, architects, landscape architects, social planners, civil engineers, surveyors and lawyers.